Global Animal Guide Wildlife Encyclopedia

Fish

The guide features 23 species in the fish class. Each profile answers the most-searched questions first.

Orange and white clownfish nestled among sea anemone tentacles

Fish

Clownfish

The reef fish that lives among stinging tentacles

Bright orange goldfish swimming in clear aquarium water

Fish

Goldfish

The world's most popular pet fish

Seahorse gripping coral with its curled tail underwater

Fish

Seahorse

The tiny fish where fathers give birth

Massive spotted whale shark swimming near the ocean surface

Fish

Whale Shark

The largest fish in the world

Shortfin mako shark with a sleek metallic-blue body swimming through open blue ocean water

Fish

Shortfin Mako Shark

The fastest shark in the ocean

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

Fish

Betta Fish

The colorful fighter of Southeast Asian waters

Silver Atlantic salmon leaping up a rushing river

Fish

Atlantic Salmon

The fish that swims upriver to spawn

Hammerhead shark with its distinctive wide flat head swimming in blue water

Critically Endangered

Fish

Hammerhead Shark

The shark with a head like a hammer

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

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

Fish

Koi

The ornamental carp of garden ponds

Tiger shark with faint dark stripes swimming through clear blue tropical water

Near Threatened

Fish

Tiger Shark

The wide-ranging scavenger of warm seas

Large manta ray gliding through blue ocean water with wings spread

Fish

Manta Ray

The gentle giant that flies through the sea

Atlantic bluefin tuna with a streamlined metallic blue body swimming in open ocean

Fish

Atlantic Bluefin Tuna

The warm-blooded ocean speedster

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

Fish

Bull Shark

The shark that swims into freshwater

Swordfish with a long flat bill and tall dorsal fin swimming in deep blue water

Fish

Swordfish

The ocean hunter armed with a sword

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

Bright royal blue tang fish with a yellow tail swimming over a coral reef

Fish

Blue Tang

The bright blue reef fish from Finding Nemo

Brightly colored male guppy with a flowing fan-shaped tail in a planted aquarium

Fish

Guppy

The colorful beginner's aquarium fish

Green moray eel peering out from a crevice in a coral reef with mouth open

Fish

Moray Eel

The reef-dwelling eel with hidden jaws

Pufferfish inflated into a spiky round ball underwater

Fish

Pufferfish

The fish that inflates into a spiky ball

Dark deep-sea anglerfish with a glowing lure and large toothy mouth

Fish

Anglerfish

The deep-sea hunter with a glowing lure

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

How many fish are in the Global Animal Guide?

The Global Animal Guide currently features 23 fish with full, answer-first profiles covering diet, habitat, size, and conservation status.

What are fish?

Fish are animals in the fish class. Browse the full list below to explore each species in detail.