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.

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Freshwater Animals

Hippopotamus
54.0"-78.0" (4’6"-6'6") | 1.4-2 m
3D
Hippopotamus
114.0"-168.0" (9’6"-14’) | 2.9-4.3 m
3D
Saltwater Crocodile
14’-23’ | 4.25-7 m (Male); 7.5’-11’ | 2.30-3.35 m (Female)
3D
Saltwater Crocodile
880-2200 lb | 400-1000 kg (Male); 180-220 lb | 82-100 kg (Female)
3D
Muskrat
2-4 years (wild); up to 10 years (captivity)
3D
North American Beaver
10-15 years (wild); 15-25 years (captivity)
3D

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Chum Salmon
Scale illustration of an average Chum Salmon with dimensions length compared to a human

The Chum Salmon (Oncorhynchus keta) are anadromous fish that are members of the family Salmonidae and number two after the Chinook salmon in size. The animal’s body color transforms as it enters either fresh or ocean water. They are also called dog salmon or keta salmon and spend very little time in freshwater, unlike the Chinook and Coho.

Chum Salmon inhabit the waters of the North Pacific and Arctic oceans having late spawning runs which make them less popular in sportfishing. The animal spots a deeper body with males at spawning time being more vivid than females, have elongated snouts, white tip on their lower fins, and large canine teeth.

Chum Salmon have a total length between 24”-40” (61-102 cm), body height of 6”-10” (15.2-25.4 cm), and an overall weight in the range of 8-22 lb (3.6-10 kg). The typical lifespan of the Chum Salmon is 3-7 years.

Pair of elevation illustrations of the Chum Salmon seen from the side and front
The Chum Salmon (Oncorhynchus keta) are anadromous fish that are members of the family Salmonidae and number two after the Chinook salmon in size. The animal’s body color transforms as it enters either fresh or ocean water. They are also called dog salmon or keta salmon.

Chum Salmon have a total length between 24”-40” (61-102 cm), body height of 6”-10” (15.2-25.4 cm), and an overall weight in the range of 8-22 lb (3.6-10 kg). The typical lifespan of the Chum Salmon is 3-7 years.

Pair of elevation illustrations of the Chum Salmon seen from the side and front
Chum Salmon
Height:
6”-10” | 15.2-25.4 cm
Width:
Length:
24”-40” | 61-102 cm
Depth:
Weight:
8-22 lb | 3.6-10 kg
Area:
Scientific Name
Oncorhynchus keta
Lifespan
3-7 years

Drawings include:

Chum Salmon side elevation, front

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Muskellunge
Measured comparison illustration of the size of a Muskellunge to a typical person

Muskellunge (Esox masquinongy) are solitary predators with duckbill-shaped jaws having long, sharp teeth. They inhabit most freshwater lakes and rivers of North America and are the largest in the Esox genus, with sides having dark markings, greenish, brownish or silver color bands, and bellies having gray or brown spots.

Muskellunge are also called muskelung, muscallonge, milliganong, and maskinonge and belong to the family Esocidae. These random spawners have excellent vision and are loved by anglers who catch them for trophies or sportfishing. They favor clean water, quiet pools, a sedentary lifestyle, and only migrate to spawn.

Muskellunge have a total length between 28”-48” (71-122 cm), body height of 3.5”-6.5” (8.9-16.5 cm), and an overall weight in the range of 10-40 lb (4.5-18.1 kg). The typical lifespan of the Muskellunge is 15-30 years.

Pair of elevation illustrations of the Muskellunge seen from the side and front
Muskellunge (Esox masquinongy) are solitary predators with duckbill-shaped jaws having long, sharp teeth. They inhabit most freshwater lakes and rivers of North America and are the largest in the Esox genus, with sides having dark markings, greenish, brownish or silver color bands, and gray bellies.

Muskellunge have a total length between 28”-48” (71-122 cm), body height of 3.5”-6.5” (8.9-16.5 cm), and an overall weight in the range of 10-40 lb (4.5-18.1 kg). The typical lifespan of the Muskellunge is 15-30 years.

Pair of elevation illustrations of the Muskellunge seen from the side and front
Muskellunge
Height:
3.5”-6.5” | 8.9-16.5 cm
Width:
Length:
28”-48” | 71-122 cm
Depth:
Weight:
10-40 lb | 4.5-18.1 kg
Area: