Freshwater is a vital and scarce resource on our planet with only 3% of the water on Earth being freshwater rivers and lakes, the rest being oceans. Freshwater rivers and lakes are formed when hollows are made in the Earth, such as when land collapses after a magma flow allowing for rainwater or melted snow to flow through and accumulate in the empty space. However, even though freshwater biomes are not expansive, they are still home to over 100,000 different species of plants and animals. Many amphibian species, such as turtles, frogs, and alligators, live in freshwater biomes. Mammals, such as otters and beavers, live in freshwater biomes too, with many more mammals stopping by a river or lake for a drink.

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.

Freshwater Animals Guides
Browse through our curated Freshwater Animals Guides for additional categorizations, tips, details, variations, styles, and histories of Freshwater Animals. Guides provide additional insights into the unique properties and shared relationships between elements.
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.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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
3D
Yellow Perch
Coho Salmon

The Coho Salmon (Oncorhynchus kisutch) is also called the Silver salmon or “silvers” and inhabits the North Pacific oceans, rivers, and coastal streams of Alaska and California. They belong to the family Salmonidae with adults having lighter bellies, silversides, and metallic blue backs. As an anadromous fish, the Coho Salmon shows distinct color patterns when in freshwater and ocean water.

Juveniles also show different color patterns when compared to adults. Coho Salmon are distinguished by their white gums, lower lobes having black spots, and large beaks during spawning in males. The indigenous people saw the fish as a representation of life and sustenance.

Coho Salmons have a total length between 18”-30” (46-76 cm), body height of 4.5”-7.5” (11.4-19 cm), and an overall weight in the range of 8-35 lb (3.6-16 kg). The typical lifespan of the Coho Salmon is 2-4 years.

Set of scaled elevation drawings of the Coho Salmon viewed from the front and side
The Coho Salmon (Oncorhynchus kisutch) is also called the Silver salmon or “silvers” and inhabits the North Pacific oceans, rivers, and coastal streams of Alaska and California. They belong to the family Salmonidae with adults having lighter bellies, silversides, and metallic blue backs.

Coho Salmons have a total length between 18”-30” (46-76 cm), body height of 4.5”-7.5” (11.4-19 cm), and an overall weight in the range of 8-35 lb (3.6-16 kg). The typical lifespan of the Coho Salmon is 2-4 years.

Set of scaled elevation drawings of the Coho Salmon viewed from the front and side
Coho Salmon
Height:
4.5”-7.5” | 11.4-19 cm
Width:
Length:
18”-30” | 46-76 cm
Depth:
Weight:
8-35 lb | 3.6-16 kg
Area:
Scientific Name
Oncorhynchus kisutch
Lifespan
2-4 years

Drawings include:

Coho Salmon side elevation, front

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Chinese Alligator (Alligator sinensis)
Comparison drawing of the Chinese Alligator compared to other crocodlians and a person

The Chinese Alligator (Alligator Sinensis), also referred to as the Yangtze alligator, has a dark gray or black coloring and an armored body. They are native to China and live in freshwater regions. The Chinese alligator is considered to be a cousin of the American alligator. They are known for digging extensive tunnels with different chambers, entrances as well as pools. The Chinese alligator remain there throughout the day to avoid human encounters. They primarily eat fish and invertebrates. They are considered to be critically endangered. The Chinese Alligator has an average lifespan of 70 years.

The Chinese Alligator has an overall length between 5’-7’ (1.5-2.1 m), body width of 8.3”-11.4” (21-29 cm), body height of 6.3”-9.1” (16-23 cm), and weight between 176-220 lb (80-100 kg). The typical lifespan of the Chinese Alligator is between 30-70 years.

Set of scaled top and elevation drawings of the Chinese Alligator
The Chinese Alligator (Alligator Sinensis), also referred to as the Yangtze alligator, has a dark gray or black coloring and an armored body. They are native to China and live in freshwater regions. The Chinese alligator is considered to be a cousin of the American alligator.

The Chinese Alligator has an overall length between 5’-7’ (1.5-2.1 m), body width of 8.3”-11.4” (21-29 cm), body height of 6.3”-9.1” (16-23 cm), and weight between 176-220 lb (80-100 kg). The typical lifespan of the Chinese Alligator is between 30-70 years.

Set of scaled top and elevation drawings of the Chinese Alligator
Chinese Alligator (Alligator sinensis)
Height:
6.3”-9.1” | 16-23 cm
Width:
8.3”-11.4” | 21-29 cm
Length:
5’-7’ | 1.5-2.1 m
Depth:
Weight:
176-220 lb | 80-100 kg
Area:
Speed
Scientific Name
Alligator sinensis
Lifespan
30-70 years

Drawings include:

Chinese Alligator top view, side

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Northern Leopard Frog (Lithobates pipiens)
Comparison drawing of the Northern Leopard Frog compared to other frogs

The northern leopard frog, Lithobates pipiens, is a leopard frog native to Canada and parts of the US, and found in permanent ponds, swamps, marshes, and slow-moving streams in forests and open areas. In the summer they move to grassy areas and lawns. It is Minnesota and Vermont’s state amphibian. They are green to brown in dorsal color, with large, dark, circular spots on its back, sides, and legs; each spot is usually bordered by a lighter ring. Northern leopard frogs eat a wide variety of animals- crickets, flies, worms, and smaller frogs. They are preyed upon by many animals like snakes, raccoons, other frogs, and even humans.

The Northern Leopard Frog has an overall length between 2”-4.5” (5.1-11.4 cm), body width of .87”-2” (2.2-5.1 cm), sitting height of roughly .98”-2.24” (2.5-5.7 cm), and weight between .75-1 oz (21-28 g). The typical lifespan of the Northern Leopard Frog is between 3-9 years.

Set of scaled top view drawings of the Northern Leopard Frog
The northern leopard frog, Lithobates pipiens, is a leopard frog native to Canada and parts of the US, and found in permanent ponds, swamps, marshes, and slow-moving streams in forests and open areas. In the summer they move to grassy areas and lawns. It is Minnesota and Vermont’s state amphibian.

The Northern Leopard Frog has an overall length between 2”-4.5” (5.1-11.4 cm), body width of .87”-2” (2.2-5.1 cm), sitting height of roughly .98”-2.24” (2.5-5.7 cm), and weight between .75-1 oz (21-28 g). The typical lifespan of the Northern Leopard Frog is between 3-9 years.

Set of scaled top view drawings of the Northern Leopard Frog
Northern Leopard Frog (Lithobates pipiens)
Height:
.98”-2.24” | 2.5-5.7 cm
Width:
.87”-2” | 2.2-5.1 cm
Length:
2”-4.5” | 5.1-11.4 cm
Depth:
Weight:
.75-1 oz | 21-28 g
Area:
Scientific Name
Lithobates pipiens
Lifespan
3-9 years

Drawings include:

Northern Leopard Frog side elevation, front, plan

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European Mink (Mustela lutreola)
Illustrated comparison diagram of the European Mink compared to similar Mustelid species

The European Mink, Mustela lutreola, is a European native semiaquatic mustelid species. It is also known as the Russian mink or the Eurasian mink. It is slightly smaller with a less specialized skull than that of the American mink, but despite a similar name, the two species are not closely related. The European mink lives in forest streams that are not likely to freeze in winter, and they primarily feed on voles, frogs, fish, crustaceans, and insects. Due to climate change, habitat destruction, decline in crayfish numbers, and competition with the American mink, the European mink is classified as a critically endangered species by the IUCN.

The European Mink has a body length in the range of 14.2”-16.9” (36-43 cm) and total weight of 1.2-1.8 lb (.55-.8 kg). European Minks have a shoulder height between 5.5”-6.7” (14-17 cm), body width of 3.9”-4.7” (10-12 cm), and tail length of 5.9”-8.7” (15-22 cm). The typical lifespan of the European Mink is between 6-10 years.

Scaled collection of drawings of European Mink in front and side poses
The European Mink, Mustela lutreola, is a European native semiaquatic mustelid species. It is also known as the Russian mink or the Eurasian mink. It is slightly smaller with a less specialized skull than that of the American mink, but despite a similar name, the two species are not closely related.

The European Mink has a body length in the range of 14.2”-16.9” (36-43 cm) and total weight of 1.2-1.8 lb (.55-.8 kg). European Minks have a shoulder height between 5.5”-6.7” (14-17 cm), body width of 3.9”-4.7” (10-12 cm), and tail length of 5.9”-8.7” (15-22 cm). The typical lifespan of the European Mink is between 6-10 years.

Scaled collection of drawings of European Mink in front and side poses
European Mink (Mustela lutreola)
Height:
5.5”-6.7” | 14-17 cm
Width:
3.9”-4.7” | 10-12 cm
Length:
14.2”-16.9” | 36-43 cm
Depth:
Weight:
1.2-1.8 lb | .55-.8 kg
Area:

Tail Length: 5.9”-8.7” | 15-22 cm

Scientific Name
Mustela lutreola
Lifespan
6-10 years

Drawings include:

European Mink side elevation (assorted), front

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Northern Dusky Salamander (Desmognathus fuscus)
Dimensioned comparison drawing of the Northern Dusky Salamander compared to other salamanders

The northern dusky salamander, Desmognathus fuscus, is an amphibian in the family of lungless salamanders; without the use of their lungs, they absorb oxygen through the skin. They are widespread and can be found in eastern Canada through Florida and west to Louisiana. In the northern ranges the dusky salamander prefers rocky woodland streams, seepages, and springs, and in the southern ranges, they occupy floodplains, sloughs, and muddy places along upland streams. They hide under leaves or rocks in or near water, or they may enter burrows for protection. The upper body varies in color from reddish-brown to gray or olive, and the underside is white or gray.

The Northern Dusky Salamander has an overall length between 2.36”-5.51” (6-14 cm), body width of .24”-.47” (.6-1.2 cm), body height of .31”-.71” (.8-1.8 cm), and weight between .16-.46 oz (4.5-13 g). The typical lifespan of the Northern Dusky Salamander is between 10-15 years.

Set of scaled top view drawings of the Northern Dusky Salamander
The northern dusky salamander, Desmognathus fuscus, is an amphibian in the family of lungless salamanders; without the use of their lungs, they absorb oxygen through the skin. They are widespread and can be found in eastern Canada through Florida and west to Louisiana.

The Northern Dusky Salamander has an overall length between 2.36”-5.51” (6-14 cm), body width of .24”-.47” (.6-1.2 cm), body height of .31”-.71” (.8-1.8 cm), and weight between .16-.46 oz (4.5-13 g). The typical lifespan of the Northern Dusky Salamander is between 10-15 years.

Set of scaled top view drawings of the Northern Dusky Salamander
Northern Dusky Salamander (Desmognathus fuscus)
Height:
.31”-.71” | .8-1.8 cm
Width:
.24”-.47” | .6-1.2 cm
Length:
2.36”-5.51” | 6-14 cm
Depth:
Weight:
.16-.46 oz | 4.5-13 g
Area:
Scientific Name
Desmognathus fuscus
Lifespan
10-15 years

Drawings include:

Northern Dusky Salamander top view, side

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