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Fish beginning with R
R - The Réunion seahorse is a species of fish in the Syngnathidae family.
R - The slender suckerfish or lousefish, Phtheirichthys lineatus, is a rare species of remora, family Echeneidae, and the only member of the genus Phtheirichthys.
Raccoon butterflyfish - It belongs to the large subgenus Rabdophorus which might warrant recognition as a distinct genus.
Racer goby - It is non-indigenous species in Poland.
Radial firefish - It is the only lionfish species with blank spines.
Ragfish - The southern driftfish or ragfish, Icichthys australis, is a medusafish of the genus Icichthys found around the world in all southern oceans between latitudes 50° S and 60° S, from the surface down to 2,000 m.
Raiamas ansorgii - Raiamas ansorgii is a species of ray-finned fish in the genus Raiamas.
Raiamas batesii - Raiamas batesii is a species of ray-finned fish in the genus Raiamas.
Raiamas buchholzi - Raiamas buchholzi is a species of ray-finned fish in the genus Raiamas.
Raiamas kheeli - Raiamas kheeli is a species of ray-finned fish in the genus Raiamas.
Raiamas levequei - Raiamas levequei is a species of ray-finned fish in the genus Raiamas.
Raiamas longirostris - Raiamas longirostris is a species of ray-finned fish in the genus Raiamas.
Raiamas nigeriensis - Raiamas nigeriensis is a species of ray-finned fish in the genus Raiamas.
Raiamas salmolucius - Raiamas salmolucius is a species of ray-finned fish in the genus Raiamas.
Raiamas scarciensis - Raiamas scarciensis is a species of ray-finned fish in the genus Raiamas.
Raiamas shariensis - Raiamas shariensis is a species of ray-finned fish in the genus Raiamas.
Raiamas steindachneri - Raiamas steindachneri is a species of ray-finned fish in the genus Raiamas.
Railroad Valley springfish - The body gives a somewhat heavy or massive impression, particularly forward, the head being almost as wide as deep.
Rainbow darter - The Etheostoma caeruleum is very sensitive to pollution and silt, staying in clean pollution free water
Rainbow sharkminnow - The rainbow shark is a popular freshwater community-tank aquarium fish of the Cyprinidae family.
Rainbow shiner - Rainbow Shiner is a species of ray-finned fish in the genus Notropis.
Rainbow slender wrasse - The rainbow slender wrasse, Suezichthys arquatus, is a wrasse of the genus Suezichthys, found in New Caledonia, New South Wales in Australia, Norfolk Island, Lord Howe Island, the Kermadec Islands, and the north east coast of New Zealand, in reef areas at depths of between 5 and 100 m.
Rainwater killifish - The rainwater killifish, is a species of fish in the Fundulidae family.
Ram cichlid - Mikrogeophagus ramirezi is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America.
Rasbora baliensis - Rasbora baliensis is a species of ray-finned fish in the genus Rasbora.
Rasbora tawarensis - Rasbora tawarensis is a species of ray-finned fish in the Cyprinidae family.
Rasptooth dogfish - The rasptooth dogfish, Miroscyllium sheikoi, is a dogfish, the only species in the genus Miroscyllium, found on the Kyushu-Palau Ridge in the northwest Pacific Ocean at depths of 360 m.
Rat-tailed stingray - The diamond stingray, Dasyatis dipterura, is a species of stingray in the family Dasyatidae.
Razorback scabbardfish - The razorback scabbardfish, Assurger anzac, is a rare species of cutlassfish, family Trichiuridae, and the only member of its genus.
Razorback sucker - The Razorback sucker sucker is most notable for the sharp-edged bulge on the anterior part,hump, of its back, between the head and dorsal fin, giving rise to its common name, as well as to the alternative "humpback sucker".
Razorbelly scad - The razorbelly scad is classified in the scad genus Alepes, which is part of the jack family, Carangidae.
Razorfish - The razorfish is generally found in coastal waters from the central Indian Ocean to the Red Sea to Hawaii.
Real trumpeter - The striped trumpeter, Latris forsteri, is a trumpeter of the family Latridae, found off southern Australia, and around New Zealand, at depths of from 50 to 300 m.
Red band-fish - Cepola macrophthalma is a bandfish of the family Cepolidae.
Red bandfish - Cepola haastii is a bandfish of the family Cepolidae, found on the inner continental shelf around New Zealand.
Red barb - The rosy barb is a subtropical freshwater fish belonging to the minnow family .
Red Canarese barb - Red Canarese Barb is a species of ray-finned fish in the genus Hypselobarbus.
Red cod - Yelloweye rockfish are prized for their meat, and were declared overfished in 2002, at which time a survey determined that their population, which had been in decline since the 1980s, was just 7-13% of numbers before commercial fishing of the species began.
Red devil - FishBase Eds.
Red discus - Discus are a genus of three species of cichlid freshwater fishes native to the Amazon River basin
Red fin shark - The rainbow shark is a popular freshwater community-tank aquarium fish of the Cyprinidae family.
Red gurnard perch - The red gurnard perch or jock stewart, Helicolenus percoides, is a rockfish of the family Sebastidae, found on the continental shelves of Australia and New Zealand at depths of between 50 and 750 m.
Red Kivu haplo - Haplochromis rubescens is a species of fish in the Cichlidae family.
Red lalia - Dwarf gouramis from Singapore may carry dwarf gourami iridovirus.
Red lionfish - Red lionfish are clad in white stripes alternated with red, maroon, or brown.
Red lizard fish - The Synodus falcatus is a type of lizardfish or Synodontidae that lives mainly in the Eastern Central Pacific.
Red morwong - The red morwong, Goniistius fuscus, is a morwong of the genus Goniistius, found off southeast Australia and the North Island of New Zealand from shallow depths to 50 m, on rocky reef and coastal areas.
Red Pangani barb - The Red Pangani Barb is a species of ray-finned fish in the Cyprinidae family.
Red piranha - The Red-bellied piranha is a species of piranha.
Red rainbowfish - They are an egg scattering species and they scatter their eggs among clumps of vegetation.
Red rio - Cuba produced a postal stamp with an image of H.
Red river shiner - Red River Shiner is a species of ray-finned fish in the genus Notropis.
Red rock cod - The eastern red scorpionfish, grandfather hapuku, New Zealand scorpionfish, or New Zealand red rock cod, Scorpaena cardinalis, is a scorpionfish of the family Scorpaenidae, found in New Zealand and southern Australia.
Red Sea bannerfish - In schools as juveniles on coral heads, sometimes with Heniochus diphreutes.
Red Sea mimic blenny - Ecsenius gravieri is a Blenny from the Western Indian Ocean.
Red Sea stonefish - Length up to 13.
Red squirrelfish - Sargocentron tiere is a Squirrelfish from the Indo-Pacific.
Red stingray - The red stingray, Dasyatis akajei, is a species of stingray in the family Dasyatidae, found in the northwestern Pacific Ocean off Japan, Korea, and China, and possibly elsewhere.
Red tabira bitterling - There are 5 subspecies in the species Acheilognathus tabira.
Red tail golden - Native to Southeast Asia, Asian arowanas inhabit blackwater rivers, slow-moving waters flowing through forested swamps and wetlands.
Red tailed tinfoil - Red-tailed Tinfoil Barb is a species of ray-finned fish in the genus Barbonymus.
Red top afra - The afra has an elongate body with vertical blue and black bars.
Red velvetfish - This fish is red all over, and instead of scales, its skin is covered with small tubercles, hence its name.
Red Victoria nothobranch - The red victoria nothobranch is a species of fish in the Aplocheilidae family.
Red wrasse - Labrus mixtus is a medium size wrasse living in rocky areas in Atlantic waters.
Red zebra - The Red Zebra, or Esther Grant's Zebra, is a Pseudotrophine cichlid.
Red-bar anthias - Pseudanthias cooperi is a Pseudanthias fish from the Indo-Pacific Ocean that occasionally makes its way into the aquarium trade.
Red-belted anthias - Pseudanthias rubrizonatus is a Pseudanthias fish from the Western Pacific Ocean.
Red-cheek wrasse - Thalassoma genivittatum, or the Red-cheek wrasse , is a species of fish in the Labridae family.
Red-cheeked fairy basslet - Pseudanthias huchtii is a Pseudanthias fish from the Western Central Pacific Ocean.
Red-spotted cat shark - Redspotted catsharks range in length from 30 to 66 cm, although these sizes are taken from captured sharks, and it is believed that they may grow larger than this.
Red-streaked blenny - Cirripectes stigmaticus is a Blenny from the Indo-Pacific.
Red-striped toadfish - Tetraodon erythrotaenia, or the red striped toadfish, is a species of Tetraodon, the largest genus in the pufferfish family.
Redback sand tilefish - Hoplolatilus marcosi, commonly called the red-lined tilefish, is a Tilefish from the Western Central Pacific.
Redband trout - The rainbow trout is a species of salmonid native to tributaries of the Pacific Ocean in Asia and North America as well as much of the central, western, eastern, and especially the northern portions of the United States.
Redbanded perch - The variable triplefin or striped triplefin, Forsterygion varium, is a triplefin of the genus Forsterygion, found in Australia including Tasmania and all around New Zealand in rock pools and depths down to 30 metres, in reef areas of broken rock with kelp.
Redbanded perch - The redbanded perch, Hypoplectrodes huntii, is a sea bass of the genus Hypoplectrodes, found in south eastern Australia, and the North Island and northern South Island of New Zealand, at depths of between 5 and 100 metres.
Redbanded weever - The redbanded weever, Parapercis binivirgata, is a sandperch of the family Pinguipedidae found around Australia and New Zealand at depths of between 50 and 150 m.
Redbreast sunfish - The redbreast sunfish reaches a maximum recorded length of about 30 cm , with a maximum recorded weight of 790 g .
Redbreast wrasse - The redbreast wrasse inhabit reefs across the Indian and Pacific oceans.
Redear sunfish - The favorite food of this species is snails.
Redeye barb - Barbus radiatus is a species of ray-finned fish in the genus Barbus.
Redeye bass - The upper jaw extends to the back of the eye, which is usually red.
Redeye gaper - The redeye gaper has a rounded, slightly compressed body and a very large head.
Redeye labeo - Redeye Labeo is fish in genus Labeo.
Redeye shiner - Redeye Chub is a species of ray-finned fish in the genus Notropis.
Redeye tetra - The red eye tetra's hardiness and ease of care makes it an excellent beginner fish.
Redface moray - The redface moray, Monopenchelys acuta, is a species of saltwater eels, the only member of the genus Monopenchelys of the Muraenidae family.
Redfingers - The redfingers is of typical morwong shape.
Redfinned blue-eye - It is listed as Critically Endangered on the IUCN Red List, and as Endangered under Queensland's Nature Conservation Act 1992.
Redfinned bully - The redfinned bully, Gobiomorphus huttoni, is a sleeper of the genus Gobiomorphus, found in rivers in New Zealand and the Chatham Islands.
Redfinned triplefin - The red-finned triplefin lives on reefs, and feeds on algae and small invertebrates.
Redhump eartheater - The redhump eartheater is native to river drainages and lakes in South America, particularly Colombia and Venezuela.
Redlip blenny - Redlip blennies can be found in coral crests and shallow fringing reefs.
Redlip shiner - Redlip Shiner is a species of ray-finned fish in the genus Notropis.
Redmarbled lizardfish - The Redmarbled lizardfish which is also known as Synodus saurus is a type of lizardfish or Synodontidae that lives mainly in the Indo-West Pacific.
Redmouth whalefish - Like the plant genus of the same name, this genus is named after Guillaume Rondelet.
Rednose labeo - African Carp is fish in genus Labeo.
Redside dace - The species is most abundant in Pennsylvania, especially in the upper parts of the Susquehanna River drainage.
Redsport barb - Orangefin Barb is a species of ray-finned fish in the genus Barbus.
Redsport barb - Zigzag Barb is a species of ray-finned fish in the genus Barbus.
Redsport barb - Redsport Barb is a species of ray-finned fish in the genus Barbus.
Redtail barb - Redtail Barb is a species of ray-finned fish in the genus Barbus.
Redtail botia - Other Latin names for this fish are Botia modesta and Botia rubripinnis.
Redtail catfish - Although the redtail catfish is the only living representative of this genus, there are other members that date back to the upper Miocene.
Redtail filefish - Pervagor melanocephalus is a Filefish from the Indo-West Pacific.
Redtail sharkminnow - Red-tailed black sharks are known for their deep black color and the vividly colored tails.
Redtail splitfin - The Redtail Splitfin comes from several rivers in the highlands of Mexico, including the Rio San Leonel and Rio Grande de Santiago in Nayarit and the Rio Tamazula in Jalisco.
Redtoothed triggerfish - The redtoothed triggerfish is a dark blue bodied fish, ranging up to 50 cm in length.
Reganella depressa - Reganella depressa is the only species of the monotypic genus Reganella, a genus of the family Loricariidae of catfish .
Reganochromis calliurus - Reganochromis calliurus is a species of fish endemic to Lake Tanganyika in East Africa.
Relict dace - Relict dace coloration is variable, but generally dusky overall, with olive and brassy shades dorsally.
Relict splitfin - The relict splitfin is a species of fish in the Goodeidae family.
Remo flounder - The Remo flounder is a righteyed flounder and so has both its eyes on the right-hand side of its body.
Requiem shark - It is viviparous, with 5 young in a litter, the size at birth being about 53 cm.
Requiem shark - The lemon shark, Negaprion brevirostris, is a shark belonging to the family Carcharhinidae that can grow 10 feet long.
Rerio - The zebrafish is a derived member of the genus Danio.
Resplendent angelfish - Cherubfish
Reticulate boxfish - Ostracion solorensis is a Boxfish from the Western Pacific.
Reticulated dragonet - Reticulated dragonet is a species of ray-finned fish in the genus Callionymus.
Rhabdalestes leleupi - Rhabdalestes leleupi is a species of fish in the Alestiidae family.
Rhadinoloricaria macromystax - Rhadinoloricaria macromystax is the only species of the monotypic genus Rhadinoloricaria, a genus of the family Loricariidae of catfish .
Rhinobatos nudidorsalis - The bareback shovelnose ray or nakedback guitarfish is a species of fish in the Rhinobatidae family.
Rhinochimaera africana - The paddlenose chimaera or paddlenose spookfish is a species of fish in the Rhinochimaeridae family.
Rhinofish - The Rhinofish is a ray-finned fish species in the family Cyprinidae.
Rhinogobius giurinus - Barcheek goby, Rhinogobius giurinus is a species of the family Gobiidae.
Rhizosomichthys totae - Of Rhizosomichthys totae
Rhodeus amurensis - The females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus fangi - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus haradai - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus laoensis - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus pseudosericeus - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus rheinardti - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus sciosemus - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus sinensis - The fish reaches a size of up to 5.
Rhodeus spinalis - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Rhodeus uyekii - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Ribbon fish - Trachipterus trachypterus, is a ribbonfish of the family Trachipteridae, found in tropical and subtropical seas worldwide.
Ribbon moray - The ribbon eel, Rhinomuraena quaesita, or Bernis eel, is a species of saltwater eels, the only member of the genus Rhinomuraena of the Muraenidae family of order Anguilliformes.
Ribbon scabbardfish - Benthodesmus tenuis is a species of fish in the Trichiuridae family.
Ribboned sweetlips - Juveniles have black stripes and live alone on rubble slopes in deep water.
Richardson's ray - Richardson's ray, Bathyraja richardsoni, is a skate of the family Rajidae, found in the Atlantic and around Cook Strait in New Zealand, at depths of from 1,300 to 2,500 m.
Richardson's sardinella - Richardson's Sardinella is a species of ray-finned fish in the genus Sardinella.
Ridge scaled rattail - The ridge scaled rattail, Macrourus carinatus, is a rattail of the genus Macrourus, found in the Great Southern Ocean at depths of between 200 and 1,200 m.
Ridged-eye flounder - In the UK the ridged-eye flounder is also known as the frog flounder; in Japan it is called meita garei, and in Korea it is known as to-da-ri.
Ridgehead - Melamphaes microps is a fish of the genus Melamphaes, found in the North Atlantic, South Atlantic, southern Indian Ocean, and the south west Pacific including New Zealand, at depths of from 1,000 to 3,000 m.
Riffle chub - The Riffle Chub is a species of ray-finned fish in the genus Algansea.
Ringed pipefish - The banded pipefish or ringed pipefish is a species of fish in the Syngnathidae family.
Ringtailed cardinalfish - A coppery-coloured fish with a broad blackish bar at the base of the tail up to 14.
Rio Grande cichlid - The Texas cichild has a large grayish high-backed body with bright blue scales and two dark spots, one at the center of the body and another and the end of its tail.
Rio Grande shiner - The Rio Grande Shiner is a species of ray-finned fish in the Cyprinidae family.
Rio Grande silvery minnow - The Rio Grande Silvery Minnow is one of the most endangered fish in North America, according to the U.
Ripon barbel - The Ripon Barbel is an East African ray-finned fish species in the family Cyprinidae.
Rippled blaasop - Pelagocephalus marki is a genus of Tetraodontidae.
Ripplefin tonguesole - Cynoglossus gilchristi, commonly known as the Ripplefin tonguesole is a species of tonguefish.
Rita macracanthus - Rita macracanthus is an extinct species of catfish of the family Bagridae.
River dragonet - River dragonet is a species of ray-finned fish in the genus Callionymus.
River eel - Much of the European eel’s life history was a mystery for centuries, as fishermen never caught anything they could identify as a young eel.
River hatchetfish - The river hatchetfish is a schooling species best kept in groups of five or more that spends most of its time in the top-level of the water where it searches for food.
River pipefish - The river pipefish is a species of fish in the Syngnathidae family.
River redhorse - A bottom-feeder, it feeds on mussels, snails, crustaceans and immature aquatic insects.
River shiner - River Shiner is a species of ray-finned fish in the genus Notropis.
Roanoke logperch - Adults of these fish are between 80 to 115 mm SL.
Robert's river garfish - Robert's river garfish is a species of fish in the Hemiramphidae family.
Robust cardinalfish - It is a vigorous fish which, apart from the second dorsal fin exhibiting a longer spine, resembles the big-eyed cardinalfish.
Robust pipehorse - The robust pipehorse is a species of fish in the Syngnathidae family.
Robust redhorse - The Robust Redhorse , also known as the Smallfin Redhorse, is a redhorse that lives in the freshwater streams of the eastern United States.
Rock cod - Rock cod are yellow-grey to red-brown with white fin margins.
Rock sea bass - The Kelp Bass , sometimes referred to as the Calico Bass , is a species of marine fish found in the north-eastern Pacific Ocean from Baja California, Mexico, to Washington, USA
Rock sole - Prior to 2000 the Northern rock sole and the rock sole, Lepidopsetta bilineata, were considered to be a single species under the genus Lepidopsetta, but work by Orr & Matarese published in 2000 reorganised the genus into three separate taxa.
Rocket panchax - The Clown killie or Banded panchax is a type of killifish, and is not related to a clownfish.
Rockfish - The New Zealand rockfish, Acanthoclinus littoreus, is a roundhead of the genus Acanthoclinus, found only in New Zealand from shallow depths to 15 m.
Rockmover wrasse - The Rockmover Wrasse is a colorful fish, 27–30 cm in length.
Rocky shiner - Rocky Shiner is a species of ray-finned fish in the genus Notropis.
Rohu - Labeo caeruleus is fish in genus Labeo.
Rohu - In Hindi it is called rehu .
Romanian Loach - The Romanian Loach is a species of ray-finned fish in the Cobitidae family.
Romanogobio elimeius - Romanogobio elimeius is a species of ray-finned fish in the Cyprinidae family.
Ropefish - The reedfish has a maximum total length of 90 centimetres but usually 40 cm in a fish tank.
Rose fish - Despite its common names, the rose fish is not a member of the order Perciformes of perch-like fish, but of its sister taxon the Scorpaeniformes; nor is it related to the haddock.
Rosefin barb - Rosefin Barb is a species of ray-finned fish in the genus Barbus.
Rosenblattia robusta - Rosenblattia robusta is a species of deepwater cardinalfish, the only member of the genus Rosenblattia, found around the world in southern temperate waters.
Rosey reds - The fathead minnow in its wild form is generally dull olive-grey in appearance, with a dusky stripe extending along the back and side, and a lighter belly.
Rosyface chub - Rosyface Chub is a species of ray-finned fish in the genus Notropis.
Rosyface shiner - The rosyface shiner eats insects, fish eggs, algae and inorganic material.
Rotorua smelt - The New Zealand smelt, New Zealand common smelt, or New Zealand cucumber fish, Retropinna retropinna, is a smelt of the family Retropinnidae, found only in New Zealand at shallow depths in estuaries and rivers.
Rough longnose dogfish - Rough longnose dogfish have an extremely long snout, no anal fin, small grooved dorsal spines, and rough pitchfork-shaped dermal denticles.
Rough sagre - The great lanternshark, Etmopterus princeps, is a shark of the family Dalatiidae found in the northeast and northwest Atlantic.
Rough shiner - Rough Shiner is a species of ray-finned fish in the genus Notropis.
Rough sillago - The rough whiting is a member of the genus Sillago, which contain 29 other species.
Rough-headed dragonet - Rough-headed dragonet is a species of ray-finned fish in the genus Callionymus.
Roughback batfish - Ogcocephalus parvus, the roughback batfish, is a species of fish in the Ogcocephalidae family.
Roughhead blenny - The roughhead blenny, Acanthemblemaria aspera, is a member of the blenny family native to the tropical Western Atlantic Ocean.
Roughhead shiner - The Roughhead Shiner is a species of ray-finned fish in the Cyprinidae family.
Roughnose stingray - Peter Last, B.
Roughscale sole - The roughscale sole's diet consists of zoobenthos organisms such as marine invertebrates and fish.
Roughskin dogfish - The roughskin spurdog is ovoviviparous with 21 to 22 young in a litter.
Roughskin dogfish - The largespine velvet dogfish, Centroscymnus cryptacanthus, is a sleeper shark of the family Dalatiidae, found on the lower continental slopes between latitudes 50°S and 54°S in the southeast Pacific Ocean from the Straits of Magellan, and the southwest Pacific from New Zealand, at depths of between 650 and 920 m.
Round stingray - The round fantail stingray or round stingray, Taeniura grabata, is a poorly known species of stingray in the family Dasyatidae.
Roundhead tonguesole - Cynoglossus dispar, commonly known as the Roundhead tonguesole is a species of tonguefish.
Roundscale spearfish - A team of university and government scientists has confirmed the existence of the enigmatic billfish species closely resembling the heavily fished, overexploited white marlin.
Roundtail chub - The body is significantly larger forward of the dorsal fin, and posteriorly it is tapered towards the tail. Roundtail Chub are also described to be “trout-like” because they possess a large mouth with the lower lip outlined in black.
Roundtoothed large-eyed bream - The emperor breams or simply emperors also known as pigface breams are a family, Lethrinidae, of fishes in the order Perciformes.
Royal basa - The body of a basa fish is stout and heavy.
Royal blue hap - It is found in Malawi, Mozambique, and Tanzania.
Royal dottyback - It can grow up to 6 cm in length.
Rubyfish - The rubyfish, Plagiogeneion rubiginosum, is a rover of the genus Plagiogeneion, found off South Africa, Australia, New Zealand, and the south west Pacific, at depths of between 50 and 600 m.
Rudd - Scardinius acarnanicus is a species of ray-finned fish in the Cyprinidae family.
Rudolf lates - Lates longispinis lives mostly in deep water areas in Lake Rudolf in Kenya and Lake Turkana in Ethiopia.
Ruivaco - Achondrostoma oligolepis is a species of ray-finned fish in the genus Achondrostoma.
Rummy-nose tetra - The rummy-nose Tetra is a torpedo-shaped fish, whose basal body colour is a translucent silvery colour suffused in some specimens with a greenish tint: iridescent green scales are frequently seen adorning the fish at the point where the fontanel meets the body.
Russet angelfish - Centropyge potteri is a marine angelfish from the Eastern Central Pacific Ocean.
Russian bitterling - The fish will grow in length up to 16 centimetres .
Russian river tule perch - The tule perch is small, at most 15 cm in length, and deep-bodied, with a definite hump shape between the head and the dorsal fin.
Rusty angelfish - Centropyge ferrugata is a marine angelfish from the Western Pacific Ocean.
Rusty carpet shark - Reproduction is oviparous.
Rusty flounder - The yellowtail flounder is a species of fish in the Pleuronectidae family.
Rutilus aula - Rutilus aula is a species of ray-finned fish in the Cyprinidae family.
Rutilus basak - Rutilus basak is a species of ray-finned fish in the Cyprinidae family.
Rutilus karamani - Rutilus karamani is a species of ray-finned fish in the Cyprinidae family.
Rutilus meidingerii - Rutilus meidingerii is a species of ray-finned fish in the Cyprinidae family.
Rutilus ohridanus - Rutilus ohridanus is a species of ray-finned fish in the Cyprinidae family.
Rutilus ylikiensis - Rutilus ylikiensis is a species of ray-finned fish in the Cyprinidae family.
Rwandese carp - Varicorhinus ruandae is a species of ray-finned fish in the Cyprinidae family.
Rwasa barb - Barbus ruasae is a species of ray-finned fish in the Cyprinidae family.
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