Freshwater Animals

Freshwater Animals

Description
Description

Freshwater animals are diverse species that inhabit rivers, lakes, streams, and wetlands. Unlike saltwater creatures of the oceans, these animals have adapted to the low salinity of freshwater environments. This diverse group includes fish like trout and catfish, amphibians like frogs and newts, and a variety of invertebrates, including crayfish and freshwater snails. Their evolution has been shaped by the unique characteristics of freshwater ecosystems, such as flow patterns, temperature fluctuations, and availability of nutrients. Many freshwater species have developed specialized adaptations for their habitats, like lungfish, which can breathe air in oxygen-depleted waters, showcasing the rich tapestry of life in freshwater biomes.

Anatomy
Anatomy

Freshwater animals exhibit a remarkable array of anatomical adaptations suited to their varied habitats. Fishes may have streamlined bodies for efficient swimming, while frogs possess powerful hind legs for leaping and swimming. Many have specialized respiratory systems; for instance, gills in fish extract oxygen from water, while some amphibians can absorb it through their skin. Sensory adaptations are also widespread, like the lateral line in fish that detects water currents and vibrations. Communication varies, with some species using visual signals, while others like frogs might vocalize with distinctive calls. Their senses are attuned to their aquatic world, enabling them to navigate, find food, and avoid predators in the dynamic freshwater ecosystems.

Human Interaction
Human Interaction

Humans and freshwater animals have a complex relationship rooted in necessity and admiration. Historically, humans have relied on freshwater species for sustenance, with fish being a staple in diets globally. Rivers and lakes are integral to human settlements for resources and transportation. In pop culture, freshwater creatures like the majestic swan or elusive Loch Ness Monster capture the imagination.

However, pollution, overfishing, and habitat destruction have threatened many species. Conservation efforts, such as sustainable fishing practices, pollution control, and habitat restoration, aim to protect these vital ecosystems. Documentaries and educational programs raise awareness, fostering a sense of stewardship towards freshwater inhabitants.

Common Questions
Common Questions
How are freshwater animals adapted to their environment?

Freshwater animals adapt to their environment through gills that obtain oxygen and allow them to live in rivers and streams in which the water is cooler and has a higher oxygen level. Freshwater animals also need to swim fast to catch food and utilize their environment to create their home.

Why are freshwater animals going extinct?

Freshwater animals are going extinct due to the creation of man-made elements that block migration routes for fish and disrupt habitats. The water withdrawal for human use also shrinks and degrades habitats as well as the draining of wetlands for development depletes habitats. Other reasons include overexploitation, pollution, and global warming.

How can we protect freshwater fish?

We can protect freshwater fish by establishing multiple solutions. These solutions include restricting the construction of dams and establishing protected wetlands. Other solutions to protect freshwater fish are regulating water withdrawal for human use and incentive for farming businesses to reduce the use of pesticides.

.67”-1.02” | 1.7-2.6 cm
.83”-1.34” | 2.1-3.4 cm
2”-3” | 5.1-7.6 cm
.05-.07 oz | 1.5-2 g
8-15 years
African Dwarf Frog
2.600
3.400
7.600
0.002
15.00
36800
GUIDE
3D
African Dwarf Frog
7”-9” | 17.8-22.9 cm
5’-6.5’ | 1.5-2 m
50-125 lb | 22.7-56.7 kg
20-50 years
Alligator Gar
22.900
200.000
56.700
50.00
72000
GUIDE
3D
Alligator Gar
10.2”-13” | 26-33 cm
18.5”-24.4” | 47-62 cm (Carapace)
22”-29” | 56-74 cm (Carapace)
176-251 lb | 80-114 kg
11-45 years (wild); 20-70 years (captivity)
Alligator Snapping Turtle
33.000
62.000
74.000
114.000
70.00
93700
GUIDE
3D
Alligator Snapping Turtle
14”-19” | 37-48 cm
22”-29” | 56-74 cm
6.5’-8.5’ | 1.98-2.59 m
331-408 lb | 150-185 kg
25-30 years
Amazon River Dolphin
48.000
74.000
259.000
185.000
30.00
32200
GUIDE
3D
Amazon River Dolphin
1.6’-2’ | 50-62 cm
2.1’-2.7’ | 63-83 cm
8’-10’ | 2.4-3 m
573-1,058 lb | 260-480 kg
15-30 years
Amazonian Manatee
62.000
83.000
300.000
480.000
30.00
3900
GUIDE
3D
Amazonian Manatee
16.9”-26” | 43-66 cm
17.7”-27.2” | 45-69 cm
9.8’-15’ | 3-4.6 m
265-1,235 lb | 120-560 kg
30-75 years
American Alligator
66.000
69.000
460.000
560.000
75.00
46800
GUIDE
3D
American Alligator
2.24”-3.9” | 5.7-9.9 cm
1.69”-2.87” | 4.3-7.3 cm
3.5”-6” | 8.9-15.2 cm
1-1.8 lb | .45-.82 kg
7-16 years
American Bullfrog
9.900
7.300
15.200
0.820
16.00
19700
GUIDE
3D
American Bullfrog
20.9”-32.3” | 53-82 cm
24.4”-36.6” | 62-93 cm
13.1’-20’ | 4-6.1 m
882-2,006 lb | 400-910 kg
50-70 years
American Crocodile
82.000
93.000
610.000
910.000
70.00
28400
GUIDE
3D
American Crocodile
1.2”-2.4” | 3-6 cm
20”-40” | 51-102 cm
13-17 lb | 6-7.7 kg
15-40 years
American Eel
6.000
102.000
7.700
40.00
10000
GUIDE
3D
American Eel
5.3”-7.9” | 13.5-20 cm
3.9”-5.9” | 10-15 cm
12.2”-18.1” | 31-46 cm
3.1-5.1 lb | 1.4-2.3 kg
3-11 years
American Mink
20.000
15.000
46.000
2.300
11.00
14000
GUIDE
3D
American Mink
8.5”-11.5” | 21.6-29.2 cm
5’-7’ | 1.52-2.13 m
60-200 lb | 27-91 kg
20-30 years
American Paddlefish
29.200
213.000
91.000
30.00
21000
GUIDE
3D
American Paddlefish
5”-6.75” | 12.7-17.1 cm
19”-24” | 48-61 cm
3-8 lb | 1.4-3.6 kg
6-10 years
American Shad
17.100
61.000
3.600
10.00
4500
GUIDE
3D
American Shad
1.2”-3.1” | 3-8 cm; 5.1” | 13 cm (Max)
6”-16” | 15-41 cm; 24” | 61 cm (Max)
.44-6 lb | .2-2.7 kg
3-6 years
Apache Trout
8.000
41.000
2.700
6.00
3460
GUIDE
3D
Apache Trout
2.5”-4” | 6.4-10.2 cm
12”-20” | 30.5-51 cm
2-4 lb | .9-1.8 kg
5-10 years
Arctic Grayling
10.200
51.000
1.800
10.00
3500
GUIDE
3D
Arctic Grayling
6.5”-9” | 16.5-22.9 cm
28”-40” | 71-102 cm
8-12 lb | 3.6-5.4 kg
5-13 years
Atlantic Salmon
22.900
102.000
5.400
13.00
13000
GUIDE
3D
Atlantic Salmon
12”-18” | 30.5-46 cm
11.4”-17.7” | 29-45 cm (Disc)
6.6-13.2 lb | 3-6 kg
8-10 years
Atlantic Stingray
46.000
45.000
6.000
10.00
1705
GUIDE
3D
Atlantic Stingray
10.2”-13.8” | 26-35 cm; 26” | 66 cm (Max)
6’-8’ | 1.83-2.44 m; 15’ | 4.57 m (Max)
198-794 lb | 90-360 kg
30-60 years
Atlantic Sturgeon
35.000
244.000
360.000
60.00
4340
GUIDE
3D
Atlantic Sturgeon
Baiji
19800
11”-20” | 27-52 cm
13”-24” | 32-61 cm
4.5’-8.5’ | 1.37-2.59 m
287-375 lb | 130-170 kg
24-30 years
Baiji
52.000
61.000
259.000
170.000
30.00
19800
GUIDE
3D
Baiji
8.3”-18.9” | 21-48 cm; 41” | 104 cm (Max)
4.7’-10.75’ | 1.42-3.28 m; 24’ | 7.32 m (Max)
573-3,307 lb | 260-1,500 kg
50-118 years
Beluga Sturgeon
48.000
328.000
1500.000
118.00
29800
GUIDE
3D
Beluga Sturgeon
22.8”-26.8” | 58-68 cm
29.5”-35.4” | 75-90 cm
16.4’-19.7’ | 5-6 m
209-882 lb | 95-400 kg
30-80 years
Black Caiman
68.000
90.000
600.000
400.000
80.00
21000
GUIDE
3D
Black Caiman
1.5”-3.75” | 3.8-9.5 cm
4”-11” | 10-28 cm
3-4 lb | 1.4-1.8 kg
7-15 years
Black Crappie
9.500
28.000
1.800
15.00
6800
GUIDE
3D
Black Crappie
1.8”-3” | 4.5-7.5 cm
9”-14.6” | 23-37 cm
.4-.5 lb | .18-.2 kg
9-11 years
Bloater
7.500
37.000
0.200
11.00
3800
GUIDE
3D
Bloater
2.6”-3.9” | 6.5-10 cm
11”-16” | 28-41 cm
.5-.6 lb | .2-.3 kg
6-8 years
Blueback Herring
10.000
41.000
0.300
8.00
2240
GUIDE
3D
Blueback Herring
3”-6.5” | 7.6-16.5 cm
7”-16” | 18-41 cm
1-2.6 lb | .5-1.2 kg
5-10 years
Bluegill
16.500
41.000
1.200
10.00
33000
GUIDE
3D
Bluegill
2”-5.5” | 5-14 cm
10”-26” | 25-66 cm
.6-6.6 lb | .3-3 kg
5-15 years
Brook Trout
14.000
66.000
3.000
15.00
24000
GUIDE
3D
Brook Trout
5”-7” | 12.7-17.8 cm
24”-34” | 61-86 cm
3-9 lb | 1.4-4 kg
5-12 years
Bull Trout
17.800
86.000
4.000
12.00
5600
GUIDE
3D
Bull Trout
2”-4.5” | 5-11.4 cm
12”-24” | 30.5-61 cm
2-7 lb | .9-3.2 kg
15-25 years
Channel Catfish
11.400
61.000
3.200
25.00
19000
GUIDE
3D
Channel Catfish
.24”-.28” | 6-7 mm
.2”-.28” | 5-7 mm
1.25”-1.5” | 3.2-3.8 cm
.1-.2 oz | 3-5 g
1-2 years
Cherry Shrimp
0.700
0.700
3.800
0.005
2.00
37700
GUIDE
3D
Cherry Shrimp
6.3”-9.1” | 16-23 cm
8.3”-11.4” | 21-29 cm
5’-7’ | 1.5-2.1 m
176-220 lb | 80-100 kg
30-70 years
Chinese Alligator
23.000
29.000
210.000
100.000
70.00
13500
GUIDE
3D
Chinese Alligator
.6”-1.7” | 1.4-4.4 cm
1.2”-3.9” | 3-10 cm (Carapace)
1”-3” | 2.5-7.5 cm (Carapace)
1.6-5.6 oz | 45-160 g
2-5 years
Chinese Mitten Crab
4.400
10.000
7.500
0.160
5.00
6150
GUIDE
3D
Chinese Mitten Crab
5.5”-8.5” | 14-21.6 cm
24”-36” | 61-91 cm
30-40 lb | 13.6-18.1 kg
5-9 years
Chinook Salmon
21.600
91.000
18.100
9.00
17000
GUIDE
3D
Chinook Salmon
6”-10” | 15.2-25.4 cm
24”-40” | 61-102 cm
8-22 lb | 3.6-10 kg
3-7 years
Chum Salmon
25.400
102.000
10.000
7.00
6200
GUIDE
3D
Chum Salmon
4.5”-7.5” | 11.4-19 cm
18”-30” | 46-76 cm
8-35 lb | 3.6-16 kg
2-4 years
Coho Salmon
19.000
76.000
16.000
4.00
20000
GUIDE
3D
Coho Salmon
3.7”-5.9” | 9.5-15 cm; 11.4” | 29 cm (Max)
2’-3’ | 61-91 cm; 6’ | 183 cm (Max)
40-79 lb | 18-36 kg
40-50 years
Colorado Pikeminnow
15.000
91.000
36.000
50.00
1200
GUIDE
3D
Colorado Pikeminnow
.79”-1.25” | 2-3.2 cm
.98”-1.57” | 2.5-4 cm
7.87”-13” | 20-33 cm
4-5.5 lb | 1.8-2.5 kg
10-30 years
Common Mudpuppy
3.200
4.000
33.000
0.003
30.00
2350
GUIDE
3D
Common Mudpuppy
3.75”-7.1” | 9.5-18 cm
6.3”-11.4” | 16-29 cm (Carapace)
8”-14” | 20.3-35.6 cm (Carapace)
11-44 lb | 5-20 kg
30-45 years (wild); 30-70 years (captivity)
Common Snapping Turtle
18.000
29.000
35.600
20.000
70.00
198000
GUIDE
3D
Common Snapping Turtle
8.7”-9.4” | 22-24 cm
12.6”-13.8” | 32-35 cm
7’-7.5’ | 2.1-2.3 m
154-176 lb | 70-80 kg
50-75 years
Cuban Crocodile
24.000
35.000
230.000
80.000
75.00
6750
GUIDE
3D
Cuban Crocodile
.2”-.3” | .5-.75 cm
.8”-1.2” | 2-3 cm
.14-.21 oz | 4-6 g
6-12 months
Devil’s Hole Pupfish
0.750
3.000
0.006
1.00
12700
GUIDE
3D
Devil’s Hole Pupfish
.87”-1.42” | 2.2-3.6 cm
1.57”-2.75” | 4-7 cm
9.45”-15.75” | 24-40 cm
4-6 lb | 1.8-2.7 kg
12-30 years
Eastern Hellbender
3.600
7.000
40.000
0.003
30.00
2050
GUIDE
3D
Eastern Hellbender
.28”-.47” | .7-1.2 cm
.24”-.39” | .6-1 cm
2.36”-3.94” | 6-10 cm
.18-.39 oz | 5-11 g
12-15 years
Eastern Newt
1.200
1.000
10.000
0.011
15.00
6000
GUIDE
3D
Eastern Newt
1.6”-2.75” | 4-7 cm
24”-39” | 61-99 cm
3-8 lb | 1.4-3.6 kg
15-20 years
European Eel
7.000
99.000
3.600
20.00
9500
GUIDE
3D
European Eel
5.5”-6.7” | 14-17 cm
3.9”-4.7” | 10-12 cm
14.2”-16.9” | 36-43 cm
1.2-1.8 lb | .55-.8 kg
6-10 years
European Mink
17.000
12.000
43.000
0.800
10.00
2500
GUIDE
3D
European Mink
26.8”-34.3” | 68-87 cm
27.2”-33.9” | 69-86 cm
13.1’-16.4’ | 4-5 m
198-463 lb | 90-210 kg
30-80 years
False Gharial
87.000
86.000
500.000
210.000
80.00
8350
GUIDE
3D
False Gharial
9.4”-13.8” | 24-35 cm
11”-16.5” | 28-42 cm
5’-9.8’ | 2.1-3 m
88-220 lb | 40-100 kg
40-100 years
Freshwater Crocodile
35.000
42.000
300.000
100.000
100.00
7800
GUIDE
3D
Freshwater Crocodile
11.8”-17.7” | 30-45 cm (Cluster)
13.8”-21.7” | 35-55 cm (Cluster)
13.8”-21.7” | 35-55 cm (Cluster)
Freshwater Sponge
45.000
55.000
55.000
2250
GUIDE
3D
Freshwater Sponge
Gharial
109000
11.8”-14.6” | 30-37 cm
16.1”-20.1” | 41-51 cm
12’-15’ | 3.7-4.6 m
353-397 lb | 160-180 kg
40-60 years
Gharial
37.000
51.000
460.000
180.000
60.00
109000
GUIDE
3D
Gharial
6.25’-8’ | 1.91-2.44 m
6.6’-8.5’ | 2-2.6 m (Disc)
794-1,323 lb | 360-600 kg
5-10 years
Giant Freshwater Stingray
244.000
260.000
600.000
10.00
2620
GUIDE
3D
Giant Freshwater Stingray
3.5”-5.1” | 9-13 cm
59”-79” | 1.5-2 m
44-62 lb | 20-28 kg
20-40 years
Giant Mottled Eel
13.000
200.000
28.000
40.00
1050
GUIDE
3D
Giant Mottled Eel
13.8”-19.7” | 35-50 cm
8.7”-11.8” | 22-30 cm
33.9”-47.2” | 86-120 cm
48.5-75 lb | 22-34 kg
8-20 years
Giant Otter
50.000
30.000
120.000
34.000
20.00
38000
GUIDE
3D
Giant Otter
3.3”-4.3” | 8.5-11 cm
2.75”-3.7” | 7-9.5 cm
10.6”-13.8” | 27-35 cm (Body)
.88-1.72 lb | 400-780 g
3-5 years
Giant Otter Shrew
11.000
9.500
35.000
0.780
5.00
300
GUIDE
3D
Giant Otter Shrew
4.13”-7.91” | 10.5-20.1 cm
4.69”-8.82” | 11.9-22.4 cm
6.7”-12.6” | 17-32 cm
7-7.4 lb | 3.2-3.4 kg
15-21 years
Goliath Frog
20.100
22.400
32.000
3.400
21.00
25200
GUIDE
3D
Goliath Frog
51”-83” | 1.3-2.1 m
39”-59” | 1-1.5 m
9.5’-16.5’ | 2.9-5.05 m
2,866-7,055 lb | 1,300-3,200 kg
36-50 years
Hippopotamus
210.000
150.000
505.000
3200.000
50.00
603000
GUIDE
3D
Hippopotamus
3.1”-4.1” | 8-10.5 cm
15”-19” | 38-48 cm
1.5-2.5 lb | .7-1.1 kg
20-40 years
Humpback Chub
10.500
48.000
1.100
40.00
1550
GUIDE
3D
Humpback Chub
16”-19” | 42-49 cm
19”-22” | 48-56 cm
7’-8.17’ | 2.13-2.49 m
154-243 lb | 70-110 kg
18-26 years
Indus River Dolphin
49.000
56.000
249.000
110.000
26.00
4500
GUIDE
3D
Indus River Dolphin
3.1”-4.7” | 8-12 cm
39”-51” | 99-130 cm
6.6-8.8 lb | 3-4 kg
15-20 years
Japanese Eel
12.000
130.000
4.000
20.00
7800
GUIDE
3D
Japanese Eel
1.8”-4.9” | 4.5-12.5 cm
8”-22” | 20-56 cm
5-10 lb | 2.3-4.5 kg
5-14 years
Lahontan Cutthroat Trout
12.500
56.000
4.500
14.00
2260
GUIDE
3D
Lahontan Cutthroat Trout
5.5”-11” | 14-28 cm
36”-72” | 91-183 cm
30-100 lb | 13.6-45.4 kg
55-150 years
Lake Sturgeon
28.000
183.000
45.400
150.00
7300
GUIDE
3D
Lake Sturgeon
4”-7” | 10.2-17.8 cm
20”-36” | 51-91 cm
4-22 lb | 1.8-10 kg
10-40 years
Lake Trout
17.800
91.000
10.000
40.00
14000
GUIDE
3D
Lake Trout
4”-8” | 10.2-20.3 cm
15”-30” | 38-76 cm
1.8-30 lb | .8-13.6 kg
15-20 years
Largemouth Bass
20.300
76.000
13.600
20.00
42000
GUIDE
3D
Largemouth Bass
1.8”-2.4” | 4.5-6 cm
5.1”-7.1” | 13-18 cm
11.8”-15.75” | 30-40 cm
2.2-10 lb | 1-4.5 kg
12-20 years
Mangrove Horseshoe Crab
6.000
18.000
40.000
4.500
20.00
230
GUIDE
3D
Mangrove Horseshoe Crab
.94”-1.57” | 2.4-4 cm
1.06”-1.81” | 2.7-4.6 cm
1.8”-3” | 4.5-7.6 cm
.05-.07 oz | 1.5-2 g
5-6 years
Mink Frog
4.000
4.600
7.600
0.002
6.00
1210
GUIDE
3D
Mink Frog
16.9”-12.3” | 43-54 cm
23.2”-29.1” | 59-74 cm
13.1’-16.4’ | 4-5 m
992-1,543 lb | 450-700 kg
30-44 years
Mugger Crocodile
54.000
74.000
500.000
700.000
44.00
8800
GUIDE
3D
Mugger Crocodile
3.5”-6.5” | 8.9-16.5 cm
28”-48” | 71-122 cm
10-40 lb | 4.5-18.1 kg
15-30 years
Muskellunge
16.500
122.000
18.100
30.00
10000
GUIDE
3D
Muskellunge
Muskrat
106000
4.5”-6.7” | 11.5-17 cm
10”-15” | 25-38 cm
1.5-4.5 lb | .7-2 kg
2-4 years (wild); up to 10 years (captivity)
Muskrat
17.000
38.000
2.000
10.00
106000
GUIDE
3D
Muskrat
12.6”-19.3” | 32-49 cm
17.3”-27.2” | 44-69 cm
9.5’-14.4’ | 2.9-4.4 m
496-1,102 lb | 225-500 kg
50-80 years
Nile Crocodile
49.000
69.000
440.000
500.000
80.00
57000
GUIDE
3D
Nile Crocodile
14.2”-16.9” | 36-43 cm
29”-35” | 74-89 cm
25-75 lb | 11.3-34 kg
10-15 years (wild); 15-25 years (captivity)
North American Beaver
43.000
89.000
34.000
25.00
3500
GUIDE
3D
North American Beaver
10.6”-16.5” | 27-42 cm
6.7”-10.2” | 17-26 cm
25.6”-41.3” | 65-105 cm
11-31 lb | 5-14 kg
8-27 years
North American River Otter
42.000
26.000
105.000
14.000
27.00
8100
GUIDE
3D
North American River Otter
.31”-.71” | .8-1.8 cm
.24”-.47” | .6-1.2 cm
2.36”-5.51” | 6-14 cm
.16-.46 oz | 4.5-13 g
10-15 years
Northern Dusky Salamander
1.800
1.200
14.000
0.013
15.00
650
GUIDE
3D
Northern Dusky Salamander
.98”-2.24” | 2.5-5.7 cm
.87”-2” | 2.2-5.1 cm
2”-4.5” | 5.1-11.4 cm
.75-1 oz | 21-28 g
3-9 years
Northern Leopard Frog
5.700
5.100
11.400
0.028
9.00
5090
GUIDE
3D
Northern Leopard Frog
2.25”-3.75” | 5.7-9.5 cm
16”-26” | 41-66 cm
1.5-4 lb | .7-1.8 kg
10-25 years
Northern Pike
9.500
66.000
1.800
25.00
30000
GUIDE
3D
Northern Pike
.35”-.39” | .9-1 cm
.35”-.39” | .9-1 cm
9.06”-9.84” | 23-25 cm
.6-5.3 oz | 17-150 g
60-100 years
Olm | Proteus
1.000
1.000
25.000
0.150
100.00
52100
GUIDE
3D
Olm | Proteus
12.2”-24.4” | 31-62 cm
18.1”-36.6” | 46-93 cm
9.8’-19.7’ | 3-6 m
496-838 lb | 225-380 kg
60-80 years
Orinoco Crocodile
62.000
93.000
600.000
380.000
80.00
4700
GUIDE
3D
Orinoco Crocodile
3.5”-7.1” | 9-18 cm
30”-60” | 76-152 cm
80-100 lb | 36-45 kg
40-70 years
Pallid Sturgeon
18.000
152.000
45.000
70.00
1620
GUIDE
3D
Pallid Sturgeon
.8”-1.57” | 2-4 cm
.67”-1.34” | 1.7-3.4 cm
1.75”-3.5” | 4.4-8.9 cm
.09-.12 oz | 2.5-3.5 g
5-8 years
Pickerel Frog
4.000
3.400
8.900
0.004
8.00
5820
GUIDE
3D
Pickerel Frog
Platypus
759400
3.9”-6.7” | 10-17 cm
3.5”-6.3” | 9-16 cm
15”-24.8” | 38-63 cm (Overall)
1.8-6.6 lb | .8-3 kg
7-21 years
Platypus
17.000
16.000
63.000
3.000
21.00
759400
GUIDE
3D
Platypus
29.5”-39” | .75-1 m
22”-26” | .55-.65 m
59”-69” | 1.5-1.75 m
353-606 lb | 160-275 kg
30-50 years
Pygmy Hippopotamus
100.000
65.000
175.000
275.000
50.00
5350
GUIDE
3D
Pygmy Hippopotamus
4.5”-7” | 11.4-17.8 cm
20”-30” | 51-76 cm
2-8 lb | .9-3.6 kg
4-11 years
Rainbow Trout
17.800
76.000
3.600
11.00
19000
GUIDE
3D
Rainbow Trout
3.5”-7.1” | 9-18 cm
1.6’-3’ | 48-91 cm
6.6-13.2 lb | 3-6 kg
35-50 years
Razorback Sucker
18.000
91.000
6.000
50.00
840
GUIDE
3D
Razorback Sucker
.79”-.98” | 20-25 mm (Diameter)
.79”-.98” | 20-25 mm (Diameter)
18.1”-22” | 46-56 cm
4-5 years
Rubber Eel
2.500
2.500
56.000
5.00
2300
GUIDE
3D
Rubber Eel
9.8”-29.5” | 25-75 cm
13.8”-41.3” | 35-105 cm
7.5’-23’ | 2.3-7 m
180-2200 lb | 82-1000 kg
70-100 years (wild); 100-120 years (captivity)
Saltwater Crocodile
75.000
105.000
700.000
1000.000
120.00
31000
GUIDE
3D
Saltwater Crocodile
Sea Otter
117000
12.2”-18.5” | 31-47 cm
10.2”-15.75” | 26-40 cm
29.5”-45.3” | 75-115 cm
31-99 lb | 14-45 kg
10-23 years
Sea Otter
47.000
40.000
115.000
45.000
23.00
117000
GUIDE
3D
Sea Otter
2.4”-3.1” | 6-8 cm
11.5’-13.1’ | 3.5-4 m
29-60 lb | 13-27 kg
10-40 years
Slender Giant Moray
8.000
400.000
27.000
40.00
90
GUIDE
3D
Slender Giant Moray
2.5”-6.5” | 6.4-16.5 cm
10”-27” | 25-69 cm
.8-12 lb | .4-5.4 kg
5-15 years
Smallmouth Bass
16.500
69.000
5.400
15.00
26000
GUIDE
3D
Smallmouth Bass
5.5”-11.8” | 14-30 cm
5.9”-13.8” | 15-35 cm
3.6’-8.2’ | 1.1-2.5 m
30-132 lb | 14-60 kg
30-70 years
Spectacled Caiman
30.000
35.000
250.000
60.000
70.00
6800
GUIDE
3D
Spectacled Caiman
.04”-.06” | .9-1.4 mm
.05”-.07” | 1.2-1.8 mm
.39”-.59” | 10-15 mm
1-2 weeks
Spiny Water Flea
0.140
0.180
1.500
0.04
1460
GUIDE
3D
Spiny Water Flea
5.5”-15.5” | 14-39.4 cm
20”-55” | 51-140 cm
5-70 lb | 2.3-32 kg
20-30 years
Striped Bass
39.400
140.000
32.000
30.00
32000
GUIDE
3D
Striped Bass
.71”-.91” | 1.8-2.3 cm
.79”-1.1” | 2-2.8 cm
5.91”-7.87” | 15-20 cm
2.1-4.6 oz | 60-130 g
14-25 years
Tiger Salamander
2.300
2.800
20.000
0.130
25.00
23700
GUIDE
3D
Tiger Salamander
Walleye
58000
4.5”-8.5” | 11.4-21.6 cm
22”-42” | 56-107 cm
3-7 lb | 1.4-3.2 kg
15-25 years
Walleye
21.600
107.000
3.200
25.00
58000
GUIDE
3D
Walleye
.22”-.33” | 5.5-8.3 mm (Male); .17”-.26” | 4.3-6.6 mm (Female)
.18”-.28” | 4.5-7 mm (Male); .14”-.22” | 3.5-5.5 mm (Female)
.94”-1.46” | 24-37 mm (Male); .75”-1.1” | 19-28 mm (Female)
1-2 years
Water Spider | Diving Bell Spider
0.830
0.700
3.700
2.00
28800
GUIDE
3D
Water Spider | Diving Bell Spider
2.1’-2.8’ | 65-85 cm
2.8’-3.6’ | 85-110 cm
10’-13’ | 3-4 m
794-1,653 lb | 360-750 kg
20-30 years
West African Manatee
85.000
110.000
400.000
750.000
30.00
260
GUIDE
3D
West African Manatee
2.3’-3.5’ | 70-107 cm
2.8’-4.3’ | 85-130 cm
10’-14.75’ | 3-4.5 m
794-1,190 lb | 360-540 kg
25-30 years
West Indian Manatee
107.000
130.000
450.000
540.000
30.00
5200
GUIDE
3D
West Indian Manatee
1.6”-2.4” | 4-6 cm; 3.5” | 9 cm (Max)
8”-12” | 20-30 cm; 18” | 46 cm (Max)
2-3.3 lb | .9-1.5 kg
6-8 years
Westslope Cutthroat Trout
6.000
30.000
1.500
8.00
1505
GUIDE
3D
Westslope Cutthroat Trout
2.5”-5.5” | 6.4-14 cm
10”-18” | 25-46 cm
2-5 lb | .9-2.3 kg
4-9 years
White Bass
14.000
46.000
2.300
9.00
15000
GUIDE
3D
White Bass
1”-2.5” | 2.5-6.4 cm
4”-10” | 10-25 cm
.5-1 lb | .2-.5 kg
7-13 years
Yellow Perch
6.400
25.000
0.500
13.00
12000
GUIDE
3D
Yellow Perch
Saltwater Crocodile (Crocodylus porosus)
Size comparison illustration of a Saltwater Crocodile compared to an average person and similar crocodiles

The Saltwater Crocodile, also known as the estuarine crocodile, Indo-Pacific crocodile, marine crocodile, sea crocodile, and saltie, is one of the largest living crocodiles. It is native to saltwater habitats and brackish wetlands including India’s east coast across Southeast Asia and the Sundaic region to northern Australia and Micronesia. The saltwater crocodile was hunted for its skin up until the 1970s, and today it is listed as least concern on the IUCN Red List. The species are hypercarnivorous apex predators, and they can overtake almost any animal that enters their territory. Saltwater crocodiles range in color with some retaining pale skin, while others may be so dark to appear black.

The typical male Saltwater Crocodile has an overall length of 14’-23’ (4.25-7 m), with females at lengths of 7.5’-11’ (2.30-3.35 m). The body width of a Saltwater Crocodile is typically between 13.8”-41.3” (35-105 cm) with a body height of 9.8”-29.5” (25-75 cm). The typical lifespan of the Saltwater Crocodile is between 70-100 years in the wild and 100-120 years in captivity. An average male Saltwater Crocodile weighs between 880-2200 lb (400-1000 kg) and has a typical lifespan of 70-100 years in the wild.

Dimensioned plan and elevation drawings of the Saltwater Crocodile
The Saltwater Crocodile is one of the largest living crocodiles. Saltwater Crocodiles are native to saltwater habitats and are hypercarnivorous apex predators, that can overtake almost any animal that enters their territory. Saltwater crocodiles range in color from pale to dark skin.

The typical male Saltwater Crocodile has an overall length of 14’-23’ (4.25-7 m), with females at lengths of 7.5’-11’ (2.30-3.35 m). The body width of a Saltwater Crocodile is typically between 13.8”-41.3” (35-105 cm) with a body height of 9.8”-29.5” (25-75 cm). The typical lifespan of the Saltwater Crocodile is between 70-100 years in the wild and 100-120 years in captivity. An average male Saltwater Crocodile weighs between 880-2200 lb (400-1000 kg) and has a typical lifespan of 70-100 years in the wild.

Dimensioned plan and elevation drawings of the Saltwater Crocodile
Saltwater Crocodile (Crocodylus porosus)
Height:
9.8”-29.5” | 25-75 cm
Width:
13.8”-41.3” | 35-105 cm
Length:
7.5’-23’ | 2.3-7 m
Depth:
Weight:
180-2200 lb | 82-1000 kg
Area:

Length (Male): 14’-23’ | 4.25-7 m
Length (Female): 7.5’-11’ | 2.30-3.35 m
Weight (Male): 880-2200 lb | 400-1000 kg
Weight (Female): 180-220 lb | 82-100 kg

Speed
15-18 mph | 24-29 km/h
Scientific Name
Crocodylus porosus
Lifespan
70-100 years (wild); 100-120 years (captivity)

Drawings include:
Saltwater Crocodile side elevation, plan

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False Gharial (Tomistoma schlegelii)
Comparison illustration of the size of a False Gharial to other crocodilians and a person

The False Gharial (Tomistoma Schlegelli) is also referred to as the Malayan gharial, has reddish-brown skin with dark spots and cross-bands on their back and tail. They have a long thin snout with lots of needle-shaped teeth. The false gharial is native to Peninsular Malaysia and Indonesian region. They can be found in rivers, lakes, and swamps. Their diet mostly consists of fish, smaller aquatic animals, large vertebrates, long-tailed macaques, deer, water birds, and reptiles. False Gharials lay the largest eggs of any crocodile. The false gharial is considered vulnerable to extinction. The lifespan of the false gharial is up to 24.7 years.

The False Gharial has an overall length between 13.1’-16.4’ (4-5 m), body width of 27.2”-33.9” (69-86 cm), body height of 26.8”-34.3” (68-87 cm), and weight between 198-463 lb (90-210 kg). The typical lifespan of the False Gharial is between 30-80 years.

Scaled collection of drawings of False Gharial in various poses
The False Gharial (Tomistoma Schlegelli) is also referred to as the Malayan gharial, has reddish-brown skin with dark spots and cross-bands on their back and tail. They have a long thin snout with lots of needle-shaped teeth. The false gharial is native to Peninsular Malaysia and Indonesian region.

The False Gharial has an overall length between 13.1’-16.4’ (4-5 m), body width of 27.2”-33.9” (69-86 cm), body height of 26.8”-34.3” (68-87 cm), and weight between 198-463 lb (90-210 kg). The typical lifespan of the False Gharial is between 30-80 years.

Scaled collection of drawings of False Gharial in various poses
False Gharial (Tomistoma schlegelii)
Height:
26.8”-34.3” | 68-87 cm
Width:
27.2”-33.9” | 69-86 cm
Length:
13.1’-16.4’ | 4-5 m
Depth:
Weight:
198-463 lb | 90-210 kg
Area:
Speed
Scientific Name
Tomistoma schlegelii
Lifespan
30-80 years

Drawings include:

False Gharial top view, side

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Humpback Chub (Gila cypha)
Comparison illustration of the size of a Humpback Chub to other freshwater fish and a typical person

The endangered Humpback Chub (Gila cypha) boasts a streamlined body. The name comes from the prominent hump positioned between the head and dorsal fin. Its body is covered with very few scales which are positioned only along the lateral line. The tail is deeply forked, while the caudal peduncle is thin. It is silver on its sides, white on the belly, and light olive-gray on the back. The anal fin has ten rays and the dorsal fin nine rays. It is found in the Colorado River system in the USA. The skull is concave, fins large and curved, and the snout overhangs the mouth. The Humpback Chub has a body that is deep and compressed.

Humpback Chubs have a total length between 15”-19” (38-48 cm) and body height of 3.1”-4.1” (8-10.5 cm). The typical weight of the Humpback Chub is in the range of 1.5-2.5 lb (.7-1.1 kg). Humpback Chubs have lifespans between 20-40 years.

Scaled collection of drawings of Humpback Chub in various poses
The endangered Humpback Chub (Gila cypha) boasts a streamlined body. The name comes from the prominent hump positioned between the head and dorsal fin. Its body is covered with very few scales which are positioned only along the lateral line. The tail is deeply forked.

Humpback Chubs have a total length between 15”-19” (38-48 cm) and body height of 3.1”-4.1” (8-10.5 cm). The typical weight of the Humpback Chub is in the range of 1.5-2.5 lb (.7-1.1 kg). Humpback Chubs have lifespans between 20-40 years.

Scaled collection of drawings of Humpback Chub in various poses
Humpback Chub (Gila cypha)
Height:
3.1”-4.1” | 8-10.5 cm
Width:
Length:
15”-19” | 38-48 cm
Depth:
Weight:
1.5-2.5 lb | .7-1.1 kg
Area:
Scientific Name
Gila cypha
Lifespan
20-40 years

Drawings include:

Humpback Chub side elevation, front

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West African Manatee (Trichechus senegalensis)
Dimensioned comparison drawing of the West African Manatee compared to other sea cows and a person

The West African Manatee, known scientifically as Trichechus senegalensis, is the least well-known Trichechus manatee and can live in salt, brackish, or fresh waters along the western coast of Africa. The West African Manatee prefers calm waters and can usually be found grazing on sea grass in mangroves and lagoons. The West African Manatee is regarded as vulnerable by the IUCN due largely to human effects on the species. The West African Manatee is frequently killed as bycatch or hunted as a pest as it will sometimes steal fish out of nets or rice from fields. The West African Manatee is one of three manatee species that make up the family Trichechus, along with the Amazonian Manatee and the West Indian Manatee.

West African Manatees have a total length between 10’-13’ (3-4 m), body height of 2.1’-2.8’ (65-85 cm), and width of 2.8’-3.6’ (85-110 cm). The typical weight of the West African Manatee is in the range of 794-1,653 lb (360-750 kg). West African Manatee have lifespans between 20-30 years.

Set of scaled elevation drawings of the West African Manatee viewed from the front and side
The West African Manatee, known scientifically as Trichechus senegalensis, is the least well-known Trichechus manatee and can live in salt, brackish, or fresh waters along the western coast of Africa. The West African Manatee prefers calm waters and can usually be found grazing on sea grass.

West African Manatees have a total length between 10’-13’ (3-4 m), body height of 2.1’-2.8’ (65-85 cm), and width of 2.8’-3.6’ (85-110 cm). The typical weight of the West African Manatee is in the range of 794-1,653 lb (360-750 kg). West African Manatee have lifespans between 20-30 years.

Set of scaled elevation drawings of the West African Manatee viewed from the front and side
West African Manatee (Trichechus senegalensis)
Height:
2.1’-2.8’ | 65-85 cm
Width:
2.8’-3.6’ | 85-110 cm
Length:
10’-13’ | 3-4 m
Depth:
Weight:
794-1,653 lb | 360-750 kg
Area:
Scientific Name
Trichechus senegalensis
Lifespan
20-30 years

Drawings include:

West African Manatee side elevation, front, top

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Freshwater Sponge (Spongilla lacustris)
Dimensioned comparison drawing of the Freshwater Sponge compared to other sponges and a person

The Freshwater sponge (Spongilla lacustris) prefers shallow, clear waters, in ponds, lakes, or slow-moving water bodies in Europe, Asia, and North America. This is the most widespread sponge in the inland waters of Europe. This dominance is mostly seen during Winter. Depending on the habitat, the freshwater sponge can be branched, digitated, or encrusting. It produces sexually or asexually and feeds on small organic animals floating in the water. Freshwater sponges can be white or green. These invertebrates attach themselves to streambed rocks and resemble algae. However, it is their soft texture that separates them from algae.

The Freshwater Sponge has an overall cluster diameter between 13.8”-21.7” (35-55 cm) and height of 11.8”-17.7” (30-45 cm). The diameters of the individual stalks are typically between .31”-.47” (.8-1.2 cm).

Set of scaled top and side view drawings of the Freshwater Sponge
The Freshwater sponge (Spongilla lacustris) prefers shallow, clear waters, in ponds, lakes, or slow-moving water bodies in Europe, Asia, and North America. This is the most widespread sponge in the inland waters of Europe. This dominance is mostly seen during Winter.

The Freshwater Sponge has an overall cluster diameter between 13.8”-21.7” (35-55 cm) and height of 11.8”-17.7” (30-45 cm). The diameters of the individual stalks are typically between .31”-.47” (.8-1.2 cm).

Set of scaled top and side view drawings of the Freshwater Sponge
Freshwater Sponge (Spongilla lacustris)
Height:
11.8”-17.7” | 30-45 cm (Cluster)
Width:
13.8”-21.7” | 35-55 cm (Cluster)
Length:
Depth:
13.8”-21.7” | 35-55 cm (Cluster)
Weight:
Area:

Stalk Diameter: .31”-.47” | .8-1.2 cm

Scientific Name
Spongilla lacustris
Lifespan

Drawings include:

Freshwater Sponge top view, side (assorted)

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