Freshwater fish are fish that spend some or all of their live in water with a salinity level lower than .05%. Freshwater fish, due to the segmented nature of ponds, lakes, and rivers, are subject to speciation similar to species on islands. Even though only .3% of global water is freshwater, only about 15,000 different species of freshwater fish exist. Freshwater fish make popular pets, while other, larger species, such as salmon, trout, and carp are hunted for food. Freshwater fish have undergone adaptations to survive in freshwater; such as, gills that diffuse dissolved gasses and keep salts inside, scales that reduce water diffusion, and kidneys that reclaim salt from body fluids before excretion.

What is the largest freshwater fish in the world?

The largest freshwater fish in the world is the beluga sturgeon. The beluga sturgeon can reach a length of 24 feet (7 m) and a weight of 3,500 lbs (1,500 kg). This freshwater fish has been declared endangered since 2004, due to the demand for its eggs that are sold as caviar.

What do freshwater fish eat?

The diet of a freshwater fish depends on its habitat, species, as well as the ecosystem they live in. Freshwater fish can carry a carnivore, herbivore, or omnivore diet depending on their species. Carnivore freshwater fish consume other live fish, insects, larvae, and crustaceans. Herbivore freshwater fish eat plants, algae, as well as other vegetable matter.

Why can’t freshwater fish live in saltwater?

Freshwater fish can’t live in saltwater because it is too salty for them. The water inside their bodies flows out and as a result they die from dehydration. Fish need to osmoregulate or maintain the right amount of water in the bodies. Freshwater fish can only survive in accordance to how much salinity their body can handle.

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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
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
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
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
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
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
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
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
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
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”-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
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
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
Lake Sturgeon
Dimensioned comparison drawing of the Lake Sturgeon compared to an average person

The Lake Sturgeon (Acipenser fulvescens) is not only a valuable gourmet food fish, but their caviar and isinglass are also used as specialty products. Because they are bottom feeders, they have barbels near their mouth for locating prey. They are also called rock sturgeon and swallow food because of lack of teeth, and belong to the family Acipenseridae besides being found in freshwater rivers and lakes in warm parts of North America.

Their torpedo-shaped bodies lack scales but bear rows of bony plates. The Lake Sturgeon is known to delay maturity and also spot an elongated spade-like snout and migrate for food and spawning locations.

Lake Sturgeon have a total length between 36”-72” (91-183 cm), body height of 5.5”-11” (14-28 cm), and an overall weight in the range of 30-100 lb (13.6-45.4 kg). The typical lifespan of the Lake Sturgeon is 55-150 years.

Set of scaled elevation drawings of the Lake Sturgeon viewed from the front and side
The Lake Sturgeon (Acipenser fulvescens) is not only a valuable gourmet food fish, but their caviar and isinglass are also used as specialty products. Because they are bottom feeders, they have barbels near their mouth for locating prey. They are also called rock sturgeon.

Lake Sturgeon have a total length between 36”-72” (91-183 cm), body height of 5.5”-11” (14-28 cm), and an overall weight in the range of 30-100 lb (13.6-45.4 kg). The typical lifespan of the Lake Sturgeon is 55-150 years.

Set of scaled elevation drawings of the Lake Sturgeon viewed from the front and side
Lake Sturgeon
Height:
5.5”-11” | 14-28 cm
Width:
Length:
36”-72” | 91-183 cm
Depth:
Weight:
30-100 lb | 13.6-45.4 kg
Area:
Scientific Name
Acipenser fulvescens
Lifespan
55-150 years

Drawings include:

Lake Sturgeon side elevation, front

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Yellow Perch

The Yellow Perch (Perca flavescens) is native to most freshwater bodies of North America. They are members of the family Percidae, preferring lakes and larger rivers with clear water. It is also called American perch, striped perch, perch, and preachers. Adults are golden yellow with bodies laterally compressed. They sport two dorsal fins and eyes either ranging from green to yellow. Females grow faster, live longer, and are often larger than males. Spawning is communal, and the fish is highly prized by both anglers and commercial fishermen. The Yellow Perch prefers forming schools as protection to young fish, though males and females have separate schools.

Yellow Perch have a total length between 4”-10” (10-25 cm), body height of 1”-2.5” (2.5-6.4 cm), and an overall weight in the range of .5-1 lb (.2-.5 kg). The typical lifespan of the Yellow Perch is 7-13 years.

Scaled collection of drawings of Yellow Perch in front and side poses
The Yellow Perch (Perca flavescens) is native to most freshwater bodies of North America. They are members of the family Percidae, preferring lakes and larger rivers with clear water. It is also called American perch, striped perch, perch, and preachers. Adults are golden yellow.

Yellow Perch have a total length between 4”-10” (10-25 cm), body height of 1”-2.5” (2.5-6.4 cm), and an overall weight in the range of .5-1 lb (.2-.5 kg). The typical lifespan of the Yellow Perch is 7-13 years.

Scaled collection of drawings of Yellow Perch in front and side poses
Yellow Perch
Height:
1”-2.5” | 2.5-6.4 cm
Width:
Length:
4”-10” | 10-25 cm
Depth:
Weight:
.5-1 lb | .2-.5 kg
Area:
Scientific Name
Perca flavescens
Lifespan
7-13 years

Drawings include:

Yellow Perch side elevation, front

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White Bass

The White Bass (Morone chrysops) is also called the sand bass, white bass, and silver bass. It is a freshwater fish of the family Moronidae that is primarily found in the Midwest United States. They spot a deep and compressed lateral body with silver-white to pale green color.

The belly of the White Bass is white and back dark. They also have continuous lines on their sides with two dorsal fins and rough scales and prefer large reservoirs and lakes. The White Bass spawn during daylight and near the surface with each female’s eggs fertilized by many males. The White Bass is social, preferring to breed and hunt in large schools.

White Basss have a total length between 10”-18” (25-46 cm), body height of 2.5”-5.5” (6.4-14 cm), and an overall weight in the range of 2-5 lb (.9-2.3 kg). The typical lifespan of the White Bass is 4-9 years.

Set of scaled elevation drawings of the White Bass viewed from the front and side
The White Bass (Morone chrysops) is also called the sand bass, white bass, and silver bass. It is a freshwater fish of the family Moronidae that is primarily found in the Midwest United States. They spot a deep and compressed lateral body with silver-white to pale green color.

White Basss have a total length between 10”-18” (25-46 cm), body height of 2.5”-5.5” (6.4-14 cm), and an overall weight in the range of 2-5 lb (.9-2.3 kg). The typical lifespan of the White Bass is 4-9 years.

Set of scaled elevation drawings of the White Bass viewed from the front and side
White Bass
Height:
2.5”-5.5” | 6.4-14 cm
Width:
Length:
10”-18” | 25-46 cm
Depth:
Weight:
2-5 lb | .9-2.3 kg
Area:
Scientific Name
Morone chrysops
Lifespan
4-9 years

Drawings include:

White Bass side elevation, front

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Bluegill

The Bluegill (Lepomis macrochirus) is a panfish, usually very bold, expressing no fear for humans. It is used as a baitfish besides also playing an important role in keeping the population of insects and crustacean low. Male Bluegills make the spawning bed and are more colorful than females.

The fish is also called brim, sunny, bream, and copper nose and belong to the sunfish family Centrarchidae, inhabiting streams, lakes, ponds, and rivers of North America. These omnivorous freshwater fish show very distinctive coloring and condensed bodies with faces and gills covered in deep blue and purple color and bellies in yellow or orange color.

Bluegills have a total length between 7”-16” (18-41 cm), body height of 3”-6.5” (7.6-16.5 cm), and an overall weight in the range of 1-2.6 lb (.5-1.2 kg). The typical lifespan of the Bluegill is 5-10 years.

Scaled collection of drawings of Bluegill in front and side poses with length measurement
The Bluegill (Lepomis macrochirus) is a panfish, usually very bold, expressing no fear for humans. It is used as a baitfish besides also playing an important role in keeping the population of insects and crustacean low. Male Bluegills make the spawning bed and are more colorful than females.

Bluegills have a total length between 7”-16” (18-41 cm), body height of 3”-6.5” (7.6-16.5 cm), and an overall weight in the range of 1-2.6 lb (.5-1.2 kg). The typical lifespan of the Bluegill is 5-10 years.

Scaled collection of drawings of Bluegill in front and side poses with length measurement
Bluegill
Height:
3”-6.5” | 7.6-16.5 cm
Width:
Length:
7”-16” | 18-41 cm
Depth:
Weight:
1-2.6 lb | .5-1.2 kg
Area:
Scientific Name
Lepomis macrochirus
Lifespan
5-10 years

Drawings include:

Bluegill side elevation, front

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American Shad

The American Shad (Alosa sapidissima) is a fish loved for three primary reasons. First, for its roe. Second for its meat rich in omega-3 fatty acid and third, for recreational purposes like sport fishing and the annual shad festival. The fish inhabits the coastal waters of North America preferring to spend most of its time in the Atlantic ocean and only migrate to freshwater when it wants to spawn. The American Shad is also called Atlantic shad, herring jacks, or Potomac shad. They are classified under the family Clupeidae and recognized by their distinct keel on the belly, moderately compressed bodies, and sharp saw-like scales.

American Shad have a total length between 19”-24” (48-61 cm), body height of 5”-6.75” (12.7-17.1 cm), and an overall weight in the range of 3-8 lb (1.4-3.6 kg). The typical lifespan of the American Shad is 6-10 years.

Scaled collection of drawings of American Shad in front and side poses
The American Shad (Alosa sapidissima) is a fish loved for three primary reasons. First, for its roe. Second for its meat rich in omega-3 fatty acid and third, for recreational purposes like sport fishing and the annual shad festival. The fish inhabits the coastal waters of North America.

American Shad have a total length between 19”-24” (48-61 cm), body height of 5”-6.75” (12.7-17.1 cm), and an overall weight in the range of 3-8 lb (1.4-3.6 kg). The typical lifespan of the American Shad is 6-10 years.

Scaled collection of drawings of American Shad in front and side poses
American Shad
Height:
5”-6.75” | 12.7-17.1 cm
Width:
Length:
19”-24” | 48-61 cm
Depth:
Weight:
3-8 lb | 1.4-3.6 kg
Area:
Scientific Name
Alosa sapidissima
Lifespan
6-10 years

Drawings include:

American Shad side elevation, front

Details & Downloads

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