Buenos Aires tetra
Mexican tetra
Black skirt tetra
Shovelnose sturgeon
Doctorfish
Bar anchovy
Pirate perch
Freshwater drum
Bearded brotula
Spotted sharpnose
Cichlid
Sucker fish
Clown featherback juvenile
Atlantic stingray
Malawi eyebiter head
Malawi eyebiter
Snowflake eel
Bandfin darter
Blackspotted topminnow
Western mosquitofish, female
Three-spined stickleback
Comparative anatomy of three South American cichlids
Yellow seahorse
Trewavas' cichlid
Brook silverside
Dwarf flag cichlid
Scale-eating cichlid
Black drum
American paddlefish
Bighead sea robin
Amazon sailfin catfish
Demon eartheater
Electric blue cichlid
Red scorpionfish
Devil scorpionfish
Flasher scorpionfish
Lookdown fish
Redeye piranha
Black banded piranha
Harlequin rasbora
Yellow stingray
Yellow stingray foetus
Moorish idol
Shad larvae
Cheek scale from sea goldie
Sea goldie
Sea goldie head
Cichlid head
American paddlefish rostrum
Scale variation in Tropheops fish
Pomfret fish and aquatic plants, X-ray
Monkfish, X-ray
Juvenile goby
Juvenile Pleuronectid flatfish
Fish, X-ray
Shark jaw
Hollowed out crab
Fish, X-ray montage
Lookdown fish, X-ray
Ocellate river stingray, X-ray
Juvenile pollack
Clingfish
Long-spined sea scorpion and clingfish
Juvenile pollack and Indian glass perch
Shark jaw, X-ray
Frog diving into water
Cormorant, X-ray
Duck, X-ray
Winghead shark, X-ray
Male kenyi cichlid
Human joint, light micrograph
Crab, X-ray
Weasel, X-ray
Pool frog, X-ray
Lizard, X-ray
Indian python, X-ray
Veiled chameleon, X-ray
Spiny-tailed monitor, X-ray
Cockroach wing, light micrograph
Peregrine falcon skeleton
Elephant teeth
Chicken, X-ray
Coot and irises, X-ray
Duck and flowers, X-ray
Rock greenling
Seabird tick marked for population monitoring
Fish chart
Examples of deep sea fishes, illustration
Nematocyst stinging cell, illustration
Driftwood catfish
Bryozoan colony, light micrograph
Thornback ray, X-ray
Shrimps, X-ray
Argonaut shell, X-ray
Sand dollars, X-ray
Spindle shells, X-ray
Mussel in shell
Brill, X-ray
European flounder X-ray
Freshwater fish in a pond, X-ray
Fig shells, X-ray
Whiting, X-ray
Tardigrade, SEM
Rhinoceros hornbill skull
Turbot, X-ray
Smalltooth sawfish, X-ray
Torrent loaches, X-ray
Pirillos, X-ray
Mouse tail internal structure, light micrograph
Dog fish tail, X-ray
Gurnard fish, X-ray
Yellowtail anemonefish
Flathead scorpionfish
Moray eel
Fish
Snake, X-ray
Fish embryo, light micrograph
Stone marten, X-ray
Veiled chameleon and grasshopper, X-ray
Common fruit fly male exoskeleton light micrograph
Housefly wing, light micrograph
Cane toad, X-ray
Elephant bones
Elephant jaw
Archer fish squirting water at prey
Chinese box turtle
Marine animals, X-ray
Seahorses, X-ray
Shell of sea snail
Starfish skeleton
Paramecium, light micrograph
Water flea, light micrograph
Underwater view of sea life, Ixtapa, Guerrero, Mexico
Underwater view of school of fish, Ixtapa, Guerrero, Mexico
Underwater view of school of striped fish, Ixtapa, Guerrero, Mexico
Underwater view of school of fish, Zihuatanejo, Guerrero, Mexico
Underwater view of fish and ocean floor, Zihuatanejo, Guerrero, Mexico
Underwater view of school of fish and ocean floor, Ixtapa, Guerrero, Mexico
Underwater view of fish, Zihuatanejo, Guerrero, Mexico
Underwater view of fish and ocen floor, Zihuatanejo, Guerrero, Mexico
Underwater view of school of fish and ocean floor, Zihuatanejo, Guerrero, Mexico
Flathead fish
Sergeant major fish
Adorned wrasse
Lionhead goldfish
Sailfin molly
Chalk bass
Firemouth cichlid
Albino rainbow shark
Longnose gar
Leopard flounder
Magnificent shrimp on snake eel
Tassled scorpionfish
Rock beauty on a reef
Flounder camouflaged on a reef
Schoolmaster snapper on a reef
Peters' monocle bream on reef, Bali, Indonesia
Threadfin hawkfish on reef, West Papua, Indonesia
Pinnate batfish, Indonesia
Tailspot blenny hiding on a reef, Indonesia
Cardinalfish on coral reef, Indonesia
Camouflaged fish
Young fish
Rock gunnel
Stickleback making nest on riverbed