Fish beginning with F

Fairy basslet - The fish begins as a dark purple starting at the head which fades mid-body to yellow at the tail.
Fairy cichlid - It is endemic to Malawi.
Falcate chameleon catfish - Acrochordonichthys gyrinus is a species of catfish of the family Akysidae.
Falkland sprat - The Falkland sprat, Sprattus fuegensis, is a herring-like, marine fish in the family Clupeidae found in the subtropical southwest Atlantic Ocean from 40° S to Tierra del Fuego and the Falkland Islands.
Fall herring - Alosa mediocris is a species of ray-finned fish in the genus Alosa.
False black lancer - Bagrichthys macropterus is a species of catfish of the family Bagridae.
False catshark - The false catshark, Pseudotriakis microdon, is a deep-sea ground shark and the sole species in the family Pseudotriakidae.
False clown anemonefish - This clown anemonefish can be recognised by its orange colour with three white bars and black markings on the fins.
False jacopever - The species was originally described by Gmelin in 1789 as Scorpaena capensis.
False moorish idol - White with 2 broad diagonal black bands, up to 7 inches in length.
False network catfish - The fish will grow in length up to 1.
False osman - False Osman is a species of ray-finned fish in the genus Schizopygopsis.
False scad - The false scad is classified within the genus Caranx, one of a number of groups known as the jacks or trevallies.
False spotted catfish - The fish will grow in length up to 1.
False yellowjacket cichlid - The female of this species is even more brilliantly coloured, with a deep shades of red and oranges much more prominent than the males colour.
Fan-tailed rag-fish - The ragfish body is scaleless and limp, both because of the cartilaginous skeleton, as well as its flabby muscles.
Fangtooth moray - The Fangtooth Moray is distinctive for its bright yellow colouring and elongated jaw, which is filled with a large number of long "glasslike" teeth.
Fanray - Platyrhina species have rounded heart-shaped pectoral fin discs with short, blunt snouts.
Fantail filefish - Pervagor spilosoma is a Filefish from the Eastern Pacific.
Farlowella vittata - The female lays the eggs on a surface during the night and the male fertilizes them.
Fat catshark - Apristurus pinguis, the fat catshark, is a cat shark of the family Scyliorhinidae found only in deep water in the East China Sea.
Featherfin cichlid - The featherfin cichlid is a species of fish in the Cichlidae family.
Fenestratus - It is found in Malawi, Mozambique, and Tanzania.
Fiery redfin - It is endemic to South Africa, and threatened by habitat destruction and the impact of invasive species.
Fighting loach - Nemacheilus selangoricus is a species of ray-finned fish in the genus Nemacheilus.
Fiji sardinella - Fiji Sardinella is a species of ray-finned fish in the genus Sardinella.
Filament-finned prawn-goby - Adult fish can grow up to two inches in length, with the striking pointed dorsal fin becoming more raised and pronounced in adulthood.
Filamentous rattail - The filamentous rattail, Gadomus aoteanus, is a rattail of the genus Gadomus, found around New Zealand.
Filetail catshark - Filetail catsharks get their name from the toothlike projections on its skin.
Filetail fanskate - The filetail fanskate is a species of fish in the Arhynchobatidae family.
Fimbriated moray - It is pale green-yellow in color with black spots on its face and can reach a max length of 80 cm.
Fine flounder - It is a medium sized flatfish, growing up to 70 cm in length, with females typically being larger than males.
Finke River Hardyhead - The Finke River hardyhead is a species of fish in the Atherinidae family.
Finless sleeper ray - This species occurs in the Pacific Ocean from the Andaman Sea near the southern Thailand-Myanmar border, through the Straits of Malacca and the Malay Peninsula to Singapore and Vietnam.
Finless sole - There is much biotechnological interest in pardaxin, early interest focused on potential shark repellant applications while newer research foucuses on antimicrobial and neurotoxic potential of pardaxin and its analogues.
Fiordichthys slartibartfasti - The Fiordland brotula, Fiordichthys slartibartfasti, is a rare viviparous brotula of the family Bythitidae, the only member of the genus Fiordichthys.
Fire goby - This fish is most commonly found near the substrate of the upper reef in tropical marine waters.
Fire neon - The glowlight is a medium size tetra growing to 4 to 5 cm , notably larger than both neon tetras and cardinal tetras.
Fire-tail devil - Labracinus cyclophthalmus is a Pseudochromis from the Western Pacific.
Firemouth - Cichlasoma meeki Cichlasoma hyorhynchum
Firetail dottyback - List of marine aquarium fish species
Firewood catfish - Firewood catfish occur in the Amazon and Orinoco River basins.
Fish shark - The Australian sharpnose shark, Rhizoprionodon taylori, is a requiem shark of the family Carcharhinidae, found in the tropical waters of the western Pacific Ocean off Papua New Guinea and northern Australia between latitudes 8° N and 28° S, from the surface to 110 m.
Fisher's seahorse - Fisher's seahorse is a species of fish in the Syngnathidae family.
Five finger - The Indo-Pacific sergeant is found from the Red Sea to South Africa, as far as Southeast Australia and South Japan.
Five-eyed flounder - Like the rest of the large-tooth flounders, it has both eyes on the left side of its head.
Fiveband barb - The fish superficially resembles the tiger barb, except that there are five black vertical bands on an orange or gold body instead of four bands on the tiger barb.
Fivebeard rockling - In colour it is has a dark brown back, with a reddish or blackish underside merging with a pale gray-brown.
Flabby whalefish - Gyrinomimus grahami is a flabby whalefish of the genus Gyrinomimus, found in all the southern oceans.
Flag acara - The species is very peaceful compared to most other cichlids, and will not uproot plants.
Flagpole frogfish - A small marine fish that reaches 20 cm in length.
Flagtail catfish - The fish will grow in length up to 8.
Flagtail swellshark - In 1994, Commonwealth Scientific and Industrial Research Organisation chief researchers Peter Last and John Stevens recognized an undescribed Australian swellshark with a variegated color pattern, which they provisionally named Cephaloscyllium "sp.
Flame chub - Flame Chub is a short species with a round body form in profile.
Flameback angelfish - When kept in an aquarium flameback angelfish are distributed throughout the tank.
Flaming angelfish - In captivity, this species feeds on a variety of food including live brine shrimp, frozen meaty foods as well as spirulina, seaweed sheets and pellets.
Flaming eel - The fire eel is an extremely elongated fish with a distinctive pointed snout and underslung mouth.
Flannelmouth sucker - The Flannelmouth Sucker’s body is long, starting with a thick anterior that moves down to a thin posterior; respectively, this causes the head to be relatively short and thick.
Flapnose houndshark - The flapnose houndshark, Scylliogaleus quecketti, is a hound shark of the family Triakidae, the only member of the genus Scylliogaleus, found from subtropical South Africa, in the western Indian Ocean between latitudes 27° S and 33° S.
Flasher scorpionfish - Scorpaenopsis macrochir is a Scorpionfish from the Pacific.
Flat bream - The Silver Bream is a species of ray-finned fish in the Cyprinidae family.
Flat-headed loach - Flat-headed loach is a species of ray-finned fish in the genus Oreonectes.
Flat-nose codling - The blue antimora or violet cod, Antimora rostrata, is a morid cod of the genus Antimora, found on the continental shelf except the north Pacific, at depths of between 350 and 3,000 m.
Flathead - The New Zealand flathead, Bembrops morelandi, is a duckbill of the family Percophidae, subfamily Bembropinae, found only around New Zealand, at depths of between 365 and 395 m.
Flathead cat shark - The flathead catshark, Apristurus macrorhynchus, is a cat shark of the family Scyliorhinidae in the order Carcharhiniformes, found in deep water in the northwest Pacific Ocean.
Flathead trout - Salmo platycephalus, also known as Ala balik is a species of trout in the Salmonidae family.
Flatjack - Although the lookdown is similar to the Atlantic moonfish, it can be distinguished by its dorsal and anal fins, the second ray on each fin being many times longer than the surrounding rays.
Flatnose cat shark - The flatnose cat shark, Apristurus acanutus, is a cat shark of the family Scyliorhinidae found in the northwest Pacific Ocean off Zhujiang, South China Sea.
Flatnose catfish - Anaspidoglanis macrostomus is a species of catfish of the family Claroteidae.
Flatwhiskered catfish - This species was first described as Pimelodus barbancho; however, this is considered a nomen oblitum.
Flavescent peacock - It is found in Malawi, Mozambique, and Tanzania.
Fleckfin dottyback - This rather variable but always brilliantly coloured species shares with Pseudoplesiops collare a higher number of precaudal vertebrae than other members of the genus and differs markedly from that species in colour, having prominent blue spots at the base of the dorsal and anal fins.
Fletch - The Atlantic halibut is a right-eyed flounder.
Flinders ranges mogurnda - Flinders Ranges gudgeons are found in permanent water in an isolated set of spring-fed creeks in the southern Gammon Ranges National Park in the arid South Australian outback.
Flinders' sillago - Eastern school whiting are a major commercial species along the eastern coast of Australia, caught by Danish seine vessels in the Bass Strait and as a byproduct of prawn trawling to the north.
Flinders' sillago - The trumpeter whiting is a benthic carnivore, consuming a variety of crustaceans, polychaetes and molluscs, with a dietary shift occurring as the mature and move into deeper waters.
Floppy-tail dottyback - Pseudochromis elongatus is a Pseudochromis from the Western Pacific.
Floral banded wobbegong - The floral banded wobbegong is a recently described species of carpet shark found in the Indian Ocean off southwestern Australia.
Florida gar - They have irregular round, black spots on the top of their head and over the entire body including the anus fin.
Florida pompano - The Florida pompano is a fast growing species and attains a length of approximately 8 inches after its first year, surviving for only about 3 to 4 years .
Florida smoothhound - The narrowfin smooth-hound , Mustelus norrisi, is a houndshark of the family Triakidae, found on the continental shelves of the subtropical western Atlantic from Florida and the northern Gulf of Mexico to Venezuela, and also southern Brazil, between latitudes 32° N and 36° S, from the surface to 100 m.
Florida torpedo - Like other Torpedo species, the Florida torpedo has a relatively circular pectoral fin disc, two dorsal fins with the first larger than the second, and a stout tail.
Flounder - The plate fish, Bothus lunatus, is a flounder of the genus Bothus, from the Western Atlantic.
Flounder - The distinctive features of the starry flounder include the combination of black and white-to-orange bar on the dorsal and anal fins, as well as the skin covered with scales modified into tiny star-shaped plates or tubercles , resulting in a rough feel.
Flounder - The brill have slender bodies, brown with lighter and darker coloured flecks covering its body, excluding the tailfin; the underside of the fish is usually cream coloured or pinkish white.
Flower scorpionfish - Hoplosebastes armatus is a species of marine fish, the only species in the genus Hoplosebastes.
Flowery flounder - There are a number of geographical and taxonomical species to which flounder belong.
Fluvial shiner - Fluvial Shiner is a species of ray-finned fish in the genus Notropis.
Flying barb - This fish has an exceptional ability for jumping, hence its name, A tight fitting lid with no gaps is recommended
Flying fox - The flying fox is a popular freshwater community-aquarium fish that belongs to the Cyprinidae family.
Flying gurnard - The flying gurnard, Dactylopterus volitans, is a fish of tropical to warm temperate waters on both sides of the Atlantic, found as far north as New Jersey and south as Brazil, and from the English Channel to Angola.
Forktail lates - The forktail lates is a species of fish in the Latidae family.
Forktail rainbowfish - According to ITIS, this should be in its own Genus, Popondichthys.
Fortescue grunter - The fortesque grunter is a species of fish in the Terapontidae family.
Fossorochromis rostratus - Its natural habitat is freshwater lakes.
Fountain darter - They live in the vegetation at the bottom of clean springwater rivers, the overuse of such springs being the main reason for their depletion.
Four-armed frogfish - Like the true frogfishes, it is a small fish, no more than 7 centimetres in length, with a flattened body and loose skin.
Four-spot butterfly - It is a quite distinct species, but most closely related to the Speckled Butterflyfish .
Fourline tonguesole - Cynoglossus attenuatus, commonly known as the Fourline tonguesole is a species of tonguefish.
Fourlined tonguesole - Cynoglossus bilineatus, commonly known as the Fourlined tonguesole is a species of tonguefish.
Fourspine cichlid - The fourspine cichlid is a species of fish in the Cichlidae family.
Fourspotted barb - The Four-spotted Barb is a species of ray-finned fish in the Cyprinidae family.
Fowler's danio - In the wild, the Queen Danio is a rheophilic species found in fast moving rivers with sandy bottoms in a tropical climate and prefer water with an ideal temperature range of 73 - 77 °F .
Franciscodoras marmoratus - Franciscodoras marmoratus is the only species in the genus Franciscodoras of the catfish family Doradidae.
Freckled cat shark - The freckled catshark, Scyliorhinus haeckelii, is a cat shark of the family Scyliorhinidae found on the continental shelf and upper slope from the western Atlantic from western Venezuela, Suriname, Brazil, and Uruguay between latitudes 11° N and 32° S.
French angelfish - The French angelfish is common in shallow reefs, occurs usually in pairs often near sea fans.
Fresh water puffer fish - The species is commonly referred to as the giant freshwater pufferfish due to its massive size, growing to a length of 67 cm .
Freshwater bream - The white Amur bream is a species of cyprinid fish, of the monotypic genus Parabramis.
Freshwater butterflyfish - Freshwater butterfly fish are small, no more than 13 centimetres in length, with very large pectoral fins.
Freshwater cobbler - The freshwater cobbler, Tandanus bostocki, is a species of catfish of the family Plotosidae.
Freshwater springer - The freshwater mullet, Myxus capensis, is a species of fish in the Mugilidae family.
Freshwater whipray - The first known specimen of the freshwater whipray was caught during a 1989 scientific expedition from the Daly River, after which it was eventually be named.
Fries's goby - Lesueurigobius friesii is a species of goby.
Frillfin turkeyfish - The Frillfin turkeyfish is a fish of the genus Pterois.
Fringebarbel sturgeon - The bastard sturgeon, fringebarbel sturgeon, ship sturgeon, spiny sturgeon, or thorn sturgeon is a species of fish in the Acipenseridae family.
Fringescale round herring - The Blue sprat, Spratelloides robustus, also known as the blue bait, blue sardineor bluebaitis, is a type of sprat fish.
Fringescale sardinella - It is native to shallow tropical waters of the western Indo-Pacific, living at depths down to 70 m, and being associated with coral reefs.
Fringfin lanternshark - The fringefin lanternshark, Etmopterus schultzi, is a shark of the family Dalatiidae found in the western central Atlantic from Texas to Florida, northern Gulf of Mexico, and Mexico.
Frost fish - While it was once common, numbers have been decreasing in the last century due to a number of possible causes.
Frostfish - The season of the tomcod varies by location -- one known example is the Sainte-Anne River in Quebec, where its season is from late-December to mid-February.
Fuelleborn's labeo - The Fuelleborn's Labeo is a species of ray-finned fish in the Cyprinidae family.
Furcodontichthys novaesi - This species is known from the middle Amazon at Lake Tefé and from the upper Jurua River drainage in the Solimões River basin.
Fuscotaeniatus - It is endemic to Malawi.
Fusigobius aureus - This is a distinctive species, largely translucent with numerous yellow spots on the body and fins and a yellow line on the head.