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Saturday, 18 July 2026

Global Animal Guide

Freshwater animals

76 species whose habitat facts match freshwater — plus a detailed biome hub with threats and classroom links.

Quick answer

Freshwater habitats include rivers, lakes, streams, and ponds. They support fish, amphibians, aquatic insects, otters, and birds that hunt along the shore. Pollution, dams, and water extraction make freshwater one of the most threatened habitat types worldwide.

Habitat browse vs biome hubs

This page is the fast species grid. The Freshwater hub adds GEO-ready explainers on threats, iconic species, and how to explore further — built for answer engines and classrooms.

Male mallard duck with green head on pond

Bird

Mallard

The familiar puddle duck

Pygmy hippopotamus standing in shallow water at the edge of a West African forest stream

Mammal

Pygmy Hippopotamus

The small forest hippo of West Africa

Alligator snapping turtle with ridged shell and hooked beak resting on a muddy riverbed

Reptile

Alligator Snapping Turtle

The prehistoric lure-fishing giant of American rivers

Indian rhinoceros with single horn and armour-plated skin grazing in tall grass

Mammal

Indian Rhinoceros

The armour-plated one-horned giant

Rainbow trout with pink stripe in clear mountain stream

Fish

Rainbow Trout

The colourful fly-fisher's favourite

Bonobo resting in lush Congo rainforest canopy

Mammal

Bonobo

The peaceful ape of the Congo Basin

Male betta with flowing red and blue fins hovering near a bubble nest at the water surface

Fish

Betta

Labyrinth fish famous for vivid fins

Proboscis monkey with large nose in mangrove

Mammal

Proboscis Monkey

Borneo's big-nosed swimmer

Scarlet macaw with red body and blue-and-yellow wing covert perched on a rainforest canopy branch

Bird

Scarlet Macaw

Iconic red-and-blue rainforest parrot

Greater flamingo standing in shallow water at golden hour with reflection

Bird

Flamingo

The pink filter-feeder that stands on one leg

Channel catfish with barbels near river bottom

Fish

Channel Catfish

North America's whiskered bottom feeder

Osprey diving talons-first toward water with white head and dark eye stripe visible

Bird

Osprey

The fish-hunting raptor of coasts and lakes

North American beaver swimming with stick in mouth near a dam

Mammal

North American Beaver

Nature's engineer of wetlands

Pink axolotl with feathery external gills underwater

Critically Endangered

Amphibian

Axolotl

The salamander that never grows up and can regrow body parts

Bald eagle with a white head and yellow beak perched on a branch

Bird

Bald Eagle

The fish-hunting raptor and national bird of the United States

Canada geese flying in V formation

Bird

Canada Goose

The honking V-formation flyer

Reticulated python with geometric net-like dorsal pattern coiled along a riverbank log

Reptile

Reticulated Python

World's longest snake

West Indian manatee floating in clear turquoise spring water, showing its rounded grey body and paddle-like flippers

Mammal

Manatee

The gentle sea cow of warm coastal waters

Peach-faced lovebird with rosy face perched on a branch

Bird

Peach-faced Lovebird

Africa's pocket parrot that bonds for life

Chinese giant salamander with wrinkled brown skin resting on a rocky stream bed

Critically Endangered

Amphibian

Chinese Giant Salamander

World's largest amphibian

American alligator resting at the edge of a sunlit swamp with reeds

Reptile

American Alligator

The armored survivor of the southern swamps

Platypus swimming at the surface of an Australian freshwater stream, showing its duck-like bill and dark waterproof fur

Near Threatened

Mammal

Platypus

The egg-laying, duck-billed mammal of Australia

Largemouth bass with open mouth near lily pads

Fish

Largemouth Bass

America's favourite freshwater game fish

Breeding common loon with black head and white-checkered back floating on a still boreal lake

Bird

Common Loon

Iconic diving bird of northern lakes

Hippopotamus half-submerged in an African river with its mouth slightly open

Mammal

Hippopotamus

Africa's deadliest large land mammal

Largetooth sawfish with long toothed rostrum swimming over an estuarine sandbank

Critically Endangered

Fish

Largetooth Sawfish

Giant ray with a toothed rostral saw

Large saltwater crocodile resting at the edge of a tropical river with mouth open

Reptile

Saltwater Crocodile

The largest living reptile and most powerful bite on Earth

Spectacled caiman basking at the edge of an Amazon wetland

Reptile

Spectacled Caiman

The common crocodilian of the Americas

Nile monitor with banded tail swimming along a muddy African riverbank

Reptile

Nile Monitor

Large African water monitor and egg predator

Bright orange goldfish swimming in clear aquarium water

Fish

Goldfish

The world's most popular pet fish

Painted turtle basking on log in pond

Reptile

Painted Turtle

The pond slider of North America

Muskrat with scaly tail swimming in a cattail marsh

Mammal

Muskrat

North America's pond-building rodent

American mink on riverbank

Mammal

American Mink

The semi-aquatic mustelid

Grey heron standing still at water edge

Bird

Grey Heron

The patient wetland hunter

Green basilisk with sail-like head and dorsal crests running bipedally across a stream

Reptile

Green Basilisk

Jesus Christ lizard that runs on water

Male smooth newt in breeding dress with wavy crest swimming in a clear garden pond

Amphibian

Smooth Newt

Widespread European pond newt

Vibrant blue and red betta fish with flowing fins in an aquarium

Fish

Betta Fish

The colorful fighter of Southeast Asian waters

Otter floating on its back in calm water with sleek wet fur and whiskers

Mammal

Otter

The playful, water-loving member of the weasel family

Mudpuppy with bushy red external gills walking on a submerged river rock

Amphibian

Mudpuppy

Fully aquatic salamander with external gills

Capybara with brown fur sitting at the edge of a river surrounded by greenery

Mammal

Capybara

The world's largest rodent

Brown rat with brown-grey fur and a long tail alert on a wooden surface

Mammal

Rat

The clever, adaptable rodent that lives everywhere humans do

Silver Atlantic salmon leaping up a rushing river

Fish

Atlantic Salmon

The fish that swims upriver to spawn

Mute swan gliding on calm water with wings arched, white plumage and orange beak

Bird

Swan

The graceful giant of lakes and rivers

Nile crocodile with armored skin basking with jaws open on a muddy riverbank

Reptile

Nile Crocodile

Africa's largest and most formidable predator of the rivers

Red-bellied piranha with a silvery body and reddish belly in murky river water

Fish

Red-bellied Piranha

The sharp-toothed fish of the Amazon

Green anaconda with dark blotches coiled at the edge of a murky Amazon swamp

Reptile

Green Anaconda

The heaviest snake in the world

Orange, white, and black koi carp swimming near the surface of a garden pond

Fish

Koi

The ornamental carp of garden ponds

Wood stork standing in shallow swamp with dark bald head and thick downcurved bill

Bird

Wood Stork

Tactile-fishing stork of southern swamps

Jabiru stork wading in flooded savanna with black neck, red neck base, and enormous bill

Bird

Jabiru

Giant stork of Neotropical wetlands

Surinam toad camouflaged on river bottom with star-shaped body and tiny starry skin pores

Amphibian

Surinam Toad

Flat frog that grows babies in its back

Spring peeper clinging to wetland reed with X-shaped cross on back and inflated vocal sac

Amphibian

Spring Peeper

Thumb-sized herald of eastern spring

Pacific tree frog on coastal fern with dark eye stripe and green or brown skin

Amphibian

Pacific Tree Frog

West Coast chorus frog behind the movie ribbit

Australian lungfish with dark scales and paddle tail swimming in murky Queensland river

Fish

Australian Lungfish

Queensland river survivor from the age of dinosaurs

Stocky grey bull shark swimming through murky coastal water near the seabed

Fish

Bull Shark

The shark that swims into freshwater

Stingray gliding over a sandy seabed with its broad flat body and long tail

Fish

Stingray

The flat-bodied ray with a venomous tail

Long dark electric eel swimming through murky freshwater near submerged plants

Fish

Electric Eel

The fish that generates powerful electric shocks

Large green American bullfrog sitting at the edge of a pond among reeds

Amphibian

American Bullfrog

North America's largest and loudest frog

European eel swimming in clear water showing its long snake-like body and smooth skin

Critically Endangered

Fish

European Eel

The 100-year reproductive mystery that baffled scientists from Aristotle to the 21st century

Common snapping turtle with a rugged shell and hooked jaws standing on a muddy bank

Reptile

Snapping Turtle

The powerful-jawed freshwater turtle of North America

Asian water monitor with dark scaly skin and yellow markings walking near water

Reptile

Asian Water Monitor

One of the largest lizards in the world

Brown warty common toad with copper eyes sitting on damp soil among leaves

Amphibian

Common Toad

The warty garden toad of Europe

Pufferfish inflated into a spiky round ball underwater

Fish

Pufferfish

The fish that inflates into a spiky ball

Gharial with a long thin snout resting on a sandy river bank

Critically Endangered

Reptile

Gharial

The fish-eating crocodilian with a long, narrow snout

Common kingfisher with bright blue back and orange chest perched over a river

Bird

Common Kingfisher

A jewel-colored diver of rivers and streams

Blue dragonfly with outstretched transparent wings resting on a reed

Insect

Dragonfly

The agile aerial hunter of ponds and streams

Smooth olive-gray African clawed frog floating in water with limbs splayed out

Amphibian

African Clawed Frog

The fully aquatic lab and pet frog

Small green and black fire-bellied toad showing its bright red and black underside

Amphibian

Oriental Fire-bellied Toad

The green toad with a warning-red belly

Male mallard duck with iridescent green head and yellow bill floating on calm water

Bird

Mallard

The familiar wild duck found around the world

Enormous Goliath frog resting on a wet rock beside a fast-flowing rainforest river

Amphibian

Goliath Frog

The largest frog on Earth

Glossy black fire salamander with bright yellow markings on a mossy forest floor

Amphibian

Fire Salamander

The black-and-yellow salamander of European forests

Tiny translucent glass frog on a leaf with internal organs visible through its skin

Amphibian

Glass Frog

The frog with see-through skin

Stout dark tiger salamander with yellow blotches crawling across damp soil

Amphibian

Tiger Salamander

A stout, burrowing salamander of North America

Bright orange red eft, the juvenile stage of the eastern newt, on a mossy log

Amphibian

Eastern Newt

The newt with a bright orange land stage

Large flat brown hellbender salamander with wrinkled skin on a streambed rock

Amphibian

Hellbender

North America's giant, fully aquatic salamander

Sacred ibis with white body, black head, and long curved bill wading in shallow water

Bird

Ibis

The long-billed wading bird of marsh and river

Small translucent X-ray tetra with a visible silvery skeleton swimming in a planted aquarium

Fish

X-ray Tetra

The see-through fish of the Amazon

Frequently asked questions

What is a freshwater habitat?

Freshwater habitats include rivers, lakes, streams, and ponds. They support fish, amphibians, aquatic insects, otters, and birds that hunt along the shore. Pollution, dams, and water extraction make freshwater one of the most threatened habitat types worldwide.

How many animals live in freshwater habitats in this guide?

The guide currently features 76 species with habitat facts matching freshwater, each with an answer-first profile.

Can an animal appear in more than one habitat?

Yes. Many species use multiple habitats across seasons or life stages. If a profile mentions several habitat keywords, the animal appears in each matching browse list and biome hub.