acanthodii actinopterygii agnatha alaska american english ammonia amphibian amphibious fish anaspida anglerfish angling antigen aquaculture aquarium aquatic animal ashtamangala astrology avatar batoidea betta bichir bird blood bluefin tuna bluestreak cleaner wrasse bone marrow book of jonah bowfin brain british columbia british english brown trout callichthyidae capillary carangidae carbon dioxide carp catch and release catfish cephalaspidomorphi cerebrum channidae characidae chondrichthyes chordate christian christianity cichlid circulatory system clade cleaner fish coelacanth coelom cold-blooded comacchio copeia corydoras crayfish crocodile ctenoid cuttlefish cycloid deep sea fish deity diencephalon diffusion digestion digital object identifier duodenum eel electric eel electric fish embiotocidae environmental effects of fishing erythrinidae esophagus extant taxon feeding the multitude filament fin finding nemo fish anatomy fish as food fish development fish farming fish locomotion fishes of the world fishing fishing industry fishkeeping freshwater fish galeaspida gamete ganges gar gas bladder georgia aquarium gigantothermy gill gnathostomata goldfish goodeidae gourami great white shark grey nurse shark grouper guadalupe island guppy hagfish haikouichthys halfbeak halkomelem language hans christian andersen heart hermaphrodite hippopotamus holocentridae homeostasis hormone horn shark horror film hyperoartia iucn red list ichthyology ichthys ika-roa indian ocean inflammation intestine invasive species jaw jellyfish jonah kidney koi koi herpes virus lake victoria lamnidae lamprey larva leafy sea dragon lemon shark list of fish common names list of fish families liver loach loricariidae lungfish mammal marine biology marsupial matsya meninges mermaid merman metamorphosis metencephalon monotypic moray eel mormyridae mudskipper myelencephalon myllokunmingia neocortex neoteny nervous system newfoundland and labrador nile perch nostril nutrition ocean olfaction olfactory bulb olfactory nerve oophagy osmoregulation osmosis osteichthyes osteostraci otolith ovary overfishing oviduct oxygen pacific ocean pain pallid sturgeon pancreas paraphyly pathogen perch pharynx phreatic phreatobius cisternarum pikaia pinniped piscis austrinus pituriaspida placenta placodermi pollution porbeagle prana pronephros prophet pteraspidomorphi rainbow trout recreational fishing republic of china respiration roe saccopharyngiformes salmon salvelinus sarcopterygii scientist scotland sea lamprey seafood seahorse semitic serranidae shark shark tale shellfish sinus venosus skate snakehead terror spermatogenesis spiral valve spleen starfish stomach surface area swordfish synonym taxon teleostei testicle tetrapod the old man and the sea thelodonti thymus tilapia tuna university of edinburgh university of wyoming vein vertebrate vishnu vulnerable species walking fish warm-blooded whale whale shark wikimedia commons wiktionary wild fisheries yamuna yolk sac zooplankton