Fish are a vertebrate class, like mammals, however they are cold-blooded and live in water. Fish are one of the oldest classes of animals, having been on the Earth for more than 500 million years. Additionally, while all fish share the common traits of having a backbone and living in water, they are one of the most diverse classes with about 32,000 different living species (which is more species than amphibians, reptiles, birds, and mammals combined). Due to the unique properties of water to transmit scent, taste, sound, and electricity, many fish have evolved to rely less on their sense of sight and more on their other senses.

What do fish eat?

The diet of fish is very diverse as the number of fish species is very large. Some fish are carnivores, while other species of fish are herbivores or omnivores. Fish generally eat small organisms, algae, and sometimes can even eat other fish. The food that fish eat depends on their species, size, and environment.

How long do fish live?

The lifespan of a fish usually depends on the species. A fish may live anywhere between a year to 200 years – it all depends on the species of fish. The lifespan of a fish typically depends on their size, species, and whether they live in the wild or captivity.

How do fish sleep?

Fish do not sleep in the same form and manner that land mammals sleep. Fish sleep by reducing their activity and metabolism while remaining alert to any potential danger. While sleeping some fish float in place, in a secure spot within the mud, or find a nest. During sleep, fish perform restorative functions.

Fish Guides
Browse through our curated Fish Guides for additional categorizations, tips, details, variations, styles, and histories of Fish. Guides provide additional insights into the unique properties and shared relationships between elements.
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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
.9”-1.5” | 2.4-3.8 cm
3.1”-5.1” | 8-13 cm
8-10 years
Amazon Puffer
3.800
13.000
10.00
3250
3D
Amazon Puffer
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
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
34”-47” | 86-119 cm
5.92’-7.83’ | 1.8-2.39 m
70-180 lb | 32-82 kg
25-35 years
Angel Shark
119.000
239.000
82.000
35.00
21200
3D
Angel Shark
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
10”-23” | 25.4-58.4 cm
5.5’-14’ | 1.7-4.3 m
200-1800 lb | 90-816 kg
20-30 years
Atlantic Blue Marlin
58.400
430.000
816.000
30.00
1500
3D
Atlantic Blue Marlin
24”-50” | 61-127 cm
7’-15’ | 2.1-4.6 m
550–2000 lb | 250-907 kg
15-30 years
Atlantic Bluefin Tuna
127.000
460.000
907.000
30.00
4300
3D
Atlantic Bluefin Tuna
13”-20” | 33-50.8 cm
7.5’-11’ | 2.3-3.4 m
132-220 lb | 60-100 kg
10-15 years
Atlantic Sailfish
50.800
340.000
100.000
15.00
450
3D
Atlantic Sailfish
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
12”-19” | 30.5-48 cm
5’-8’ | 152-244 cm
60-280 lb | 27-127 kg
30-55 years
Atlantic Tarpon
48.000
244.000
127.000
55.00
700
3D
Atlantic Tarpon
26”-49” | 66-125 cm
6.6-8.8 lb | 3-4 kg
10-15 years
Australian Ghost Shark
125.000
4.000
15.00
550
3D
Australian Ghost Shark
2”-2.4” | 5-6 cm
31”-34” | 79-86 cm
10-19 lb | 4.5-9 kg
9-15 years
Bahamas Sawshark
6.000
86.000
9.000
15.00
150
3D
Bahamas Sawshark
22’-35’ | 6.7-10.7 m
8800-13200 lb | 4000-6000 kg
Up to 50 years
Basking Shark
1070.000
6000.000
50.00
57000
3D
Basking Shark
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
1.4”-2” | 3.5-5 cm
9.1”-13.8” | 23-35 cm
3-6 years
Big-Belly Seahorse
5.000
35.000
6.00
1250
3D
Big-Belly Seahorse
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
7.5”-11.4” | 19-29 cm
4.92’-8’ | 1.5-2.44 m
150-270 lb | 68-122 kg
12-16 years
Blacktip Shark
29.000
244.000
122.000
16.00
19200
3D
Blacktip Shark
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
8.5’-13’ | 2.6-4 m
120-400 lb | 54-181 kg
15-20 years
Blue Shark
400.000
181.000
20.00
16000
3D
Blue Shark
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
3.5”-6.5” | 8.9-16.5 cm
16”-30” | 40-75 cm
7-20 lb | 3-9 kg
10-20 years
Bonefish
16.500
75.000
9.000
20.00
100
3D
Bonefish
12.2”-25.2” | 31-64 cm
5’-10’ | 1.52-3.05 m
300-440 lb | 136-200 kg
15-25 years
Bramble Shark
64.000
305.000
200.000
25.00
1850
3D
Bramble Shark
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
7’-11.5” | 2.1-3.5 m
400-700 lb | 181-318 kg
12-25 years
Bull Shark
350.000
318.000
25.00
56000
3D
Bull Shark
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
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
13”-21” | 33-53 cm
19.3”-30.3” | 49-77 cm
30-40 lb | 13.6-18 kg
5-8 years
Clearnose Skate
53.000
77.000
18.000
8.00
1940
3D
Clearnose Skate
10.2”-18.1” | 26-46 cm
16”-28” | 41-71 cm
13.2-28.7 lb | 6-13 kg
16-24 years
Coffin Ray
46.000
71.000
13.000
24.00
2800
3D
Coffin Ray
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
24”-33” | 61-84 cm
14.6”-20.5” | 37-52 cm (Disc)
11-32 lb | 5-14.5 kg
15-20 years
Common Eagle Ray
84.000
52.000
14.500
20.00
25500
3D
Common Eagle Ray
9.8”-22” | 25-56 cm
30”-64” | 76-163 cm
55-65 lb | 25-29.5 kg
16-24 years
Common Guitarfish
56.000
163.000
29.500
24.00
7310
3D
Common Guitarfish
3.5”-12.6” | 9-32 cm
10”-36” | 25.4-91.4 cm
11-22 lb | 5-10 kg
8-11 years
Common Hogfish
32.000
91.400
10.000
11.00
45080
3D
Common Hogfish
.4”-1” | 1-2.5 cm
2.75”-6.7” | 7-17 cm;
1-4 years
Common Seahorse
2.500
17.000
4.00
240800
3D
Common Seahorse
4.9’-6.6’ | 1.5-2 m
6.6’-9.4’ | 2-2.85 m (Total)
220-330 lb | 100-150 kg
50-55 years
Common Skate
200.000
285.000
150.000
55.00
1600
3D
Common Skate
18”-55” | 46-140 cm
14.6”-44.5” | 37-113 cm (Disc)
31-70.5 lb | 14-32 kg
15-21 years
Common Stingray
140.000
113.000
32.000
21.00
357700
3D
Common Stingray
7.9”-16.1” | 20-41 cm
12”-24” | 30.5-61 cm
11-22 lb | 5-10 kg
10-15 years
Common Torpedo
41.000
61.000
10.000
15.00
550
3D
Common Torpedo
5.1”-5.9” | 13-15 cm
7”-8” | 18-20 cm
4-10 years
Copperband Butterflyfish
15.000
20.000
10.00
3700
3D
Copperband Butterflyfish
30”-45” | 76-114 cm
18.9”-28.3” | 48-72 cm (Disc)
26.5-50.7 lb | 12-23 kg
13-18 years
Cownose Ray
114.000
72.000
23.000
18.00
12200
3D
Cownose Ray
9’-17’ | 2.74-5.18 m
5.3’-10.17’ | 1.61-3.10 m
661-794 lb | 300-360 kg
15-20 years
Devil Fish
518.000
310.000
360.000
20.00
19500
3D
Devil Fish
.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
.1”-.2” | .3-.6 cm
1”-2” | 2.5-5.1 cm
1-2 years
Dwarf Seahorse
0.600
5.100
2.00
3900
3D
Dwarf Seahorse
3.1”-4.7” | 8-12 cm
60”-84” | 1.52-2.13 m
6.6-55 lb | 3-25 kg
15-20 years
European Conger
12.000
213.000
25.000
20.00
1150
3D
European Conger
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
2.4”-3.1” | 6-8 cm
31”-37” | 79-94 cm
2.2-4.4 lb | 1-2 kg
10-30 years
Fimbriated Moray
8.000
94.000
2.000
30.00
140
3D
Fimbriated Moray
1.8”-3” | 4.5-7.5 cm
4’-6.67’ | 1.22-2.03 m
200-300 lb | 91-136 kg
20-25 years
Frilled Shark
7.500
203.000
136.000
25.00
121100
3D
Frilled Shark
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
33.3”-40.6” | 77-103 cm
6.75’-8.83’ | 2.06-2.69 m
275-507 lb | 125-230 kg
16-20 years
Giant Guitarfish
103.000
269.000
230.000
20.00
780
3D
Giant Guitarfish
5.9”-8.7” | 15-22 cm
5.92’-9.83’ | 1.8-3 m
66-79 lb | 30-36 kg
10-30 years
Giant Moray
22.000
300.000
36.000
30.00
1900
3D
Giant Moray
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
7.9”-22” | 20-56 cm
10’-26.2’ | 3-8 m; 36’ | 11 m (Max)
882-1,322 lb | 400-600 kg
7-12 years
Giant Oarfish
56.000
800.000
600.000
12.00
21900
3D
Giant Oarfish
15’-23’ | 4.6-7 m
15’-23’ | 4.6-7 m
5,300-6,600 lb | 2,400-3,000 kg
18-20 years
Giant Oceanic Manta Ray
700.000
700.000
3000.000
20.00
8900
3D
Giant Oceanic Manta Ray
10”-20” | 25.4-50.8 cm
33”-67” | 85-170 cm
33-132 lb | 15-60 kg
10-25 years
Giant Trevally
50.800
170.000
60.000
25.00
4700
3D
Giant Trevally
5’-12.5’ | 1.5-3.8 m
330-463 lb | 150-210 kg
30-35 years
Goblin Shark
380.000
210.000
35.00
82000
3D
Goblin Shark
21”-34.6” | 53-88 cm
12’-20’ | 3.66-6.1 m
510-1,000 lb | 231-454 kg
20-30 years
Great Hammerhead
88.000
610.000
454.000
30.00
13100
3D
Great Hammerhead
11’-21’ | 3.35-6.4 m
1500-2400 lb | 680-1090 kg
30-70 years
Great White Shark
640.000
1090.000
70.00
133000
3D
Great White Shark
12’-24’ | 3.7-7.3 m
1950-2250 lb | 885-1020 kg
300-500 years
Greenland Shark
730.000
1020.000
500.00
55000
3D
Greenland Shark
3.3”-3.9” | 8.5-10 cm
8.3”-9.8” | 21-25 cm
.9-1.2 oz | .02-.03 kg
15-20 years
Hairy Frogfish
10.000
25.000
0.030
20.00
5250
3D
Hairy Frogfish
6.7”-9” | 17-23 cm
36”-48” | 91-122 cm
20-23 lb | 9-10.4 kg
12-25 years
Horn Shark
23.000
122.000
10.400
25.00
8200
3D
Horn Shark
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
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
7.5’-11’ | 2.3-3.4 m
190-400 lb | 86-181 kg
25-35 years
Lemon Shark
340.000
181.000
35.00
27000
3D
Lemon Shark
4’-7’ | 1.2-2.1 m
35-45 lb | 16-20 kg
20-30 years
Leopard Shark
210.000
20.000
30.00
15000
3D
Leopard Shark
1”-1.4” | 2.5-3.5 cm
5”-7.5” | 13-19 cm
1-4 years
Lined Seahorse
3.500
19.000
4.00
1800
3D
Lined Seahorse
4.3”-5.1” | 11-13 cm
54”-59” | 137-150 cm
20-30 lb | 9-13.6 kg
10-15 years
Longnose Sawshark
13.000
150.000
13.600
15.00
380
3D
Longnose Sawshark
6.5”-10.5” | 16.5-26.7 cm
33”-55” | 84-140 cm
15-40 lb | 7-18 kg
4-5 years
Mahi-Mahi
26.700
140.000
18.000
5.00
6200
3D
Mahi-Mahi
13’-18’ | 4-5.5 m
2000-2700 lb | 907-1225 kg
Unknown
Megamouth Shark
550.000
1225.000
28000
3D
Megamouth Shark
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
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
7.5’-10’ | 2.3-3 m
200-330 lb | 91-150 kg
15-25 years
Nurse Shark
300.000
150.000
25.00
35000
3D
Nurse Shark
15.75”-20.5” | 40-52 cm
10’-13’ | 3.05-3.96 m
200-370 lb | 91-168 kg
25-36 years
Oceanic Whitetip Shark
52.000
396.000
168.000
36.00
13250
3D
Oceanic Whitetip Shark
.6”-1.4” | 1.5-3.5 cm
1.5”-4” | 4-10 cm
.4-.7 lb | .2-.3 kg
3-6 years
Ocellaris Clownfish
3.500
10.000
0.300
6.00
10700
3D
Ocellaris Clownfish
19.3”-24” | 49-61 cm
12’-14.5’ | 3.66-4.42 m
700-1,960 lb | 318-889 kg
40 years (minimum)
Pacific Sleeper Shark
61.000
442.000
889.000
40.00
4550
3D
Pacific Sleeper Shark
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
7.9”-10.25” | 20-26 cm
54”-66” | 137-168 cm
13-35 lb | 6-16 kg
25-30 years
Port Jackson Shark
26.000
168.000
16.000
30.00
14150
3D
Port Jackson Shark
5.5”-8.7” | 14-22 cm
11.8”-17.7” | 30-45 cm
2.5-3.5 lb | 1.1-1.6 kg
15-20 years
Queen Angelfish
22.000
45.000
1.600
20.00
7650
3D
Queen Angelfish
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
3.1”-4.3” | 8-11 cm
11-15” | 28-38 cm
1-2.6 lb | .5-1.2 kg
10-18 years
Red Lionfish
11.000
38.000
1.200
18.00
10100
3D
Red Lionfish
2.6”-4.3” | 6.5-11 cm
9.8”-15.75” | 25-40 cm
.7-.9 lb | .3-.4 kg
9-12 years
Red-Lipped Batfish
11.000
40.000
0.400
12.00
11800
3D
Red-Lipped Batfish
9.83’-11.5’ | 3-3.5 m
5’-5.75’ | 1.52-1.75 m
1,543-3,086 lb | 700-1,400 kg
40-50 years
Reef Manta Ray
350.000
175.000
1400.000
50.00
2920
3D
Reef Manta Ray
3.7”-4.9” | 9.5-12.5 cm
9.8”-11.8” | 25-30 cm
5-10 years
Reef Triggerfish
12.500
30.000
10.00
5750
3D
Reef Triggerfish
13”-16.5” | 33-41.9 cm
48”-63” | 122-160 cm
25-80 lb | 11-36 kg
20-35 years
Roosterfish
41.900
160.000
36.000
35.00
3000
3D
Roosterfish
6.5’-10’ | 2-3 m
485-1000 lb | 220-454 kg
20-30 years
Salmon Shark
300.000
454.000
30.00
11000
3D
Salmon Shark
27.2”-33.1” | 69-84 cm
47”-59” | 119-150 cm
27-35 lb | 12-16 kg
25-35 years
Sand Devil
84.000
150.000
16.000
35.00
1190
3D
Sand Devil
7’-10.5’ | 2.1-3.2 m
200-400 lb | 91-182 kg
10-15 years
Sand Tiger Shark
320.000
182.000
15.00
12000
3D
Sand Tiger Shark
31.1”-46.5” | 79-118 cm
6’-8.83’ | 1.83-2.69 m
187-298 lb | 85-135 kg
10-25 years
Shark Ray
118.000
269.000
135.000
25.00
3350
3D
Shark Ray
11.8”-22” | 30-56 cm
30”-54” | 76-137 cm
40-48.5 lb | 18-22 kg
11-16 years
Shovelnose Guitarfish
56.000
137.000
22.000
16.00
2810
3D
Shovelnose Guitarfish
Greenland Shark
Comparison illustration of the size of a Greenland Shark to a typical person

The Greenland Shark (Somniosus Microcephalus), also referred to as the gurry shark, is a rare species of shark that has a short-rounded snout, small eyes, and between 48 to 52 teeth. Male Greenland sharks are smaller than female sharks. Greenland sharks live in the northern Atlantic and Arctic Ocean.

Greenland Sharks typically eat fish such as sharks, skates, eels, herring, capelin, arctic char, cod, rosefish, and sculpins. They commonly have 10 offspring at a time and are independent since birth. Greenland sharks have the longest known lifespan of all vertebrate species at up to 500 years. Greenland sharks are currently near-threatened by extinction due to hunting by humans.

Greenland Sharks have a total length between 12’-24’ (3.7-7.3 m) and an overall weight in the range of 1950-2250 lb (885-1020 kg). The typical lifespan of the Greenland Shark is a lengthy 300-500 years.

Scaled collection of drawings of Greenland Shark in various poses
The Greenland Shark (Somniosus Microcephalus), also referred to as the gurry shark, has a short-rounded snout, small eyes, and between 48 to 52 teeth. Male Greenland sharks are smaller than female sharks. Greenland sharks live in the northern Atlantic and Arctic Ocean.

Greenland Sharks have a total length between 12’-24’ (3.7-7.3 m) and an overall weight in the range of 1950-2250 lb (885-1020 kg). The typical lifespan of the Greenland Shark is a lengthy 300-500 years.

Scaled collection of drawings of Greenland Shark in various poses
Greenland Shark
Height:
Width:
Length:
12’-24’ | 3.7-7.3 m
Depth:
Weight:
1950-2250 lb | 885-1020 kg
Area:
Speed
Scientific Name
Somniosus microcephalus
Lifespan
300-500 years

Drawings include:

Greenland Shark side elevation, side (perspective), front, top

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Mahi-Mahi | Common Dolphinfish
Dimensioned comparison drawing of the Mahi-Mahi compared to an average person

The Mahi-Mahi (Coryphaena hippurus), also known as the common Dolphinfish, are found in most warm, tropical, and subtropical oceans of the earth. They belong to the family Coryphaenidae with males being larger than females.

Females have round heads while males have prominent protruding foreheads. They have a single long-based fin running along their compressed, slightly slender, long body from the head to the tail. They also have sharply concave caudal and anal fins. The Mahi-Mahi’s side and back show a mix of dazzling green or bright blue colors. The fish also changes color when out of the water and are highly prized as a commercial and sport fish.

Mahi-Mahis have a total length between 33”-55” (84-140 cm), body height of 6.5”-10.5” (16.5-26.7 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Mahi-Mahi is 4-5 years.

Pair of elevation illustrations of the Mahi-Mahi seen from the side and front
The Mahi-Mahi (Coryphaena hippurus), also known as the common Dolphinfish, are found in most warm, tropical, and subtropical oceans of the earth. They belong to the family Coryphaenidae and are a highly prized game fish in commercial and sport fishing.

Mahi-Mahis have a total length between 33”-55” (84-140 cm), body height of 6.5”-10.5” (16.5-26.7 cm), and an overall weight in the range of 15-40 lb (7-18 kg). The typical lifespan of the Mahi-Mahi is 4-5 years.

Pair of elevation illustrations of the Mahi-Mahi seen from the side and front
Mahi-Mahi | Common Dolphinfish
Height:
6.5”-10.5” | 16.5-26.7 cm
Width:
Length:
33”-55” | 84-140 cm
Depth:
Weight:
15-40 lb | 7-18 kg
Area:
Scientific Name
Coryphaena hippurus
Lifespan
4-5 years

Drawings include:

Mahi-Mahi side elevation, front

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Horn Shark (Heterodontus francisci)
Scale illustration of an average Horn Shark with dimensions for height and length compared to a human

A common characteristic of the Horn Shark (Heterodontus francisci) is that it maintains a particular routine. After scavenging close to the shore, it will return to its usual resting place. It belongs to the bullhead family, slow-moving and nocturnal. It is also called bullhead shark, horned shark, or pig shark. Look for it in the coastal waters of the western coast of North America, where you will identify it by its short blunt head, having ridges over its eyes and two high dorsal fins. These dorsal fins have large spines. The Horn shark is usually brown or gray and may have small dark spots. Besides, it is oviparous and only captured for the aquarium trade.

Horn Sharks have a total length between 36”-48” (91-122 cm) and body width of 6.7”-9” (17-23 cm). The typical weight of the Horn Shark is in the range of 20-23 lb (9-10.4 kg). Horn Sharks have lifespans between 12-25 years.

Series of elevation illustrations of the Horn Shark
A common characteristic of the Horn Shark (Heterodontus francisci) is that it maintains a particular routine. After scavenging close to the shore, it will return to its usual resting place. It belongs to the bullhead family, slow-moving and nocturnal. It is also called bullhead shark.

Horn Sharks have a total length between 36”-48” (91-122 cm) and body width of 6.7”-9” (17-23 cm). The typical weight of the Horn Shark is in the range of 20-23 lb (9-10.4 kg). Horn Sharks have lifespans between 12-25 years.

Series of elevation illustrations of the Horn Shark
Horn Shark (Heterodontus francisci)
Height:
Width:
6.7”-9” | 17-23 cm
Length:
36”-48” | 91-122 cm
Depth:
Weight:
20-23 lb | 9-10.4 kg
Area:
Speed
Scientific Name
Heterodontus francisci
Lifespan
12-25 years

Drawings include:

Horn Shark side elevation, side (perspective), front, top

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Zebra Moray (Gymnomuraena zebra)
Dimensioned comparison drawing of the Zebra Moray compared to an average person and other eels

The heavily banded dark and white color gives the Zebra moray (Gymnomuraena zebra) a ‘zebra' motif. Aside from being prevalent throughout Indo-Pacific zones, it is also fit for community fish tanks as it no threat to aquarists and other tank dwellers. The Zebra Moray belongs to the family Muraenidae and possesses an elliptical but short snout, a flat and plate-like dental formula for crushing hard shells unlike for other morays that are pointed. Like most morays, it loves rocks and coral reefs of shallow water, nocturnal, shy, and reclusive predators compared to other morays and rarely aggressive unless bullied.

Zebra Morays have a total length between 20”-59” (51-150 cm) and body height of 1.2”-3.5” (3-9 cm). Zebra Morays have lifespans between 10-20 years.

Set of scaled elevation drawings of the Zebra Moray
The heavily banded dark and white color gives the Zebra moray (Gymnomuraena zebra) a ‘zebra' motif. Aside from being prevalent throughout Indo-Pacific zones, it is also fit for community fish tanks as it no threat to aquarists and other tank dwellers. Zebra Morays belong to the family Muraenidae.

Zebra Morays have a total length between 20”-59” (51-150 cm) and body height of 1.2”-3.5” (3-9 cm). Zebra Morays have lifespans between 10-20 years.

Set of scaled elevation drawings of the Zebra Moray
Zebra Moray (Gymnomuraena zebra)
Height:
1.2”-3.5” | 3-9 cm
Width:
Length:
20”-59” | 51-150 cm
Depth:
Weight:
Area:
Scientific Name
Gymnomuraena zebra
Lifespan
10-20 years

Drawings include:

Zebra Moray side elevation, side (perspective), front, top

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Common Stingray (Dasyatis pastinaca)
Scale illustration of an average Common Stingray compared to a human and similar rays

Perhaps the most obvious feature in the common stingray (Dasyatis Pastinaca) is the whip-like tail that bends on the upper and lower fins besides its smooth skin, plain-colored body, painful sting but not life-threatening, and slightly bulging snout. The common stingray fits into the family Dasyatidae, preferring shallow but sandy and muddy coastal habitat of the Black Sea, Mediterranean Sea, and Northeastern Atlantic Ocean. The pectoral fin is diamond-shaped but wider rather than being longer. The fish loves to move in schools of the same sex, are edible, especially the wings, while other parts used to produce fishmeal or fish oil.

Common Stingrays have a total width between 18”-55” (46-140 cm) and overall disc length of 14.6”-44.5” (37-113 cm). The typical weight of the Common Stingray is in the range of 31-70.5 lb (14-32 kg). Common Stingrays have lifespans between 15-21 years.

Pair of elevation illustrations of the Common Stingray seen from the side and top
Perhaps the most obvious feature in the common stingray (Dasyatis Pastinaca) is the whip-like tail that bends on the upper and lower fins besides its smooth skin, plain-colored body, painful sting but not life-threatening, and slightly bulging snout.

Common Stingrays have a total width between 18”-55” (46-140 cm) and overall disc length of 14.6”-44.5” (37-113 cm). The typical weight of the Common Stingray is in the range of 31-70.5 lb (14-32 kg). Common Stingrays have lifespans between 15-21 years.

Pair of elevation illustrations of the Common Stingray seen from the side and top
Common Stingray (Dasyatis pastinaca)
Height:
Width:
18”-55” | 46-140 cm
Length:
14.6”-44.5” | 37-113 cm (Disc)
Depth:
Weight:
31-70.5 lb | 14-32 kg
Area:

Tail Length: 1.3-1.5x body length

Scientific Name
Dasyatis pastinaca
Lifespan
15-21 years

Drawings include:

Common Stingray side elevation, front, top

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