Fish Names Beginning With R

red piranha
The Red Piranha. Denitsa Ivanova / EyeEm / Getty Images

Here's an overview of fish, from the dangerous Red Bellied Piranha to the docile Red Aphyosemion, that begin with the letter "R."

Fish Names Beginning With R

Rachow's Darter Tetra - Characidium rachovii: This bottom dwelling Tetra likes to be around its own kind. It lives well with fish like Danios that dwell at the tank's mid top but don't keep it with larger fish that are predatory.
Rainbow Cichlid - Herotilapia multispinosa: The Rainbow Cichlid is can alter its coloring according to its moods. The background color is a lemon yellow to gold, and it has a horizontal black bar running from  behind the eyes to the caudal fin's base.
Rainbow Copella - Copella vilmae: Copellas are unique as they lay their eggs on plants out of the water. When a female agrees to spawn, she positions herself next to the male. The partners then leap out of the water together and attach themselves to the underside of a leaf using the suction of their fins.
Rainbow Shark - Epalzeorhynchos frenatum: The Rainbow Shark is a good fish for a semi-aggressive aquarium, as long as it's the only shark and its tank mates are of a similar size.
Rainbow Tetra - Nematobrycon palmeri: Rainbow Tetras are peaceful but can exhibit territorial behavior with each other.

Keep them in groups of at least 10 to reduce aggression between males.
Ram Cichlid - Microgeophagus ramirezi: The ram cichlid is a popular fish for a tropical freshwater aquarium. While most don't do well in a community tank, a male and female pair can live together quite nicely.
Rathbun's Bloodfin - Aphyocharax rathbuni: Keep the peaceful Rathbun's Bloodfin in a shoal of at least six. However, don't keep it with predatory fish or those with long fins.
Red Aphyosemion - Aphyosemion sjoestedti: This is a quiet and shy species and it will be intimated by more by more vigorous fish and out-competed for food.
Red Base Tetra - Hemigrammus stictus: This peaceful Tetra that won’t do well with larger or boisterous  tank mates. Keep them in a group of at least six, and ideally 10 or more as they prefer their own kind.
Red Bellied Piranha - Serrasalmus nattereri: These fish live in a huge school and spend most of their time trolling for prey. The Red Bellied Piranha is a freshwater predator that is dangerous to both people and animals.

More Fish Names That Begin With the Letter "R"

Red Breast Acara - Laetacara dorsigera
Red Breasted Flag Cichlid - Laetacara dorsiger
Red Congo Tetra - Alestes imberi
Red Devil - Amphilophus labiatus
Red Eyed Tetra - Moenkhausia sanctaefilomenae
Red Fin Banded Pencilfish - Nannostomus erythrurus
Red Fin Otocinclus - Parotocinclus maculicauda
Red Fin Pickerel - Esox americanus americanus
Red Fin Shark - Epalzeorhynchos frenatus
Red Finned Cigar Shark - Leptobarbus hoevenii
Red Finned Loach - Botia lecontei
Red Finned Pike Cichlid - Crenicichla johanna
Red Gill Congo Tetra - Phenacogrammus major
Red Gourami - Colisa lalia
Red Headed Cichlid - Cichlasoma synspilum
Red Hook Silver Dollar - Myleus rubripinnis rubripinnis
Red Hump Eartheater - Geophagus steindachneri
Red Pacu - Piaractus brachypomus
Red Piranha - Serrasalmus nattereri
Red Rainbowfish - Glossolepis incisus
Red Ram - Microgeophagus altispinosa
Red Rasbora - Rasbora heteromorpha
Red Salmon Rainbowfish - Glossolepis incisus
Red Shark - Epalzeorhynchos frenatus
Red Snakehead - Channa micropeltes
Red Spot Callochromis - Callochromis pleurospilus
Red Spot Silver Dollar - Metynnis luna
Red Spotted Characin - Copeina guttata
Red Spotted Cichlid - Cichlasoma bifasciatum
Red Spotted Pyrrhulina - Pyrrhulina rachoviana
Red Stripe Rasbora - Rasbora pauciperforata
Red Striped Earth Eater - Geophagus surinamensis
Red Striped Rainbowfish - Melanotaenia splendida rubrostriata
Red Tailed Black Shark - Epalzeorhynchus bicolor
Red Tailed Catfish - Phractocephalus hemioliopterus
Red Tailed Goodeid - Xenotoca eiseni
Red Tailed Hemiodopsis - Hemiodopsis microlepis
Red Tailed Labeo - Epalzeorhynchus bicolor
Red Tailed Rasbora - Rasbora borapetensis
Red Tailed Shark - Epalzeorhynchos bicolor
Red Terror - Cichlasoma festae
Red Tipped Bleeding Heart Tetra - Hyphessobrycon pyrrhonotos
Red Tuxedo Platy - Xiphophorus maculatus
Red Wagtail Platy - Xiphophorus maculatus
Red Zebra Mbuna - Pseudotropheus estherae
Red Zebra - Metriaclima estherae
Regan's Julie - Julidochromis regani
Regan's Pike Cichlid - Crenicichla regani
Rice Swamp Eel - Monopterus albus
Ring Tailed Pike Cichlid - Crenicichla saxatilis
Rio Grande Perch - Herichthys cyanoguttatum
Rio Madeira Apistogramma - Apistogramma sp.


Rio Meta Pimelodid - Pimelodella metae
River Barb - Barbus barbus
Roanoke Hog Sucker - Hypentelium roanokense
Roloff's Kribensis - Pelvicachromis roloffi
Ropefish - Erpetoichthys calabaricus
Rostratus - Fossorochromis rostratus
Rosy Danio - Danio roseus
Rosy Barb - Barbus conchonius
Rosy Tetra - Hyphessobrycon bentosi rosaceus
Rough Fish - Myxocyprinus asiaticus
Royal Knifefish - Chitala blanci
Royal Pleco - Panaque nigrolineatus
Royal Whiptail Farlowella - Sturisoma panamense
Ruby Barb - Puntius nigrofasciatus
Ruby Shark - Epalzeorhynchos frenatus
Rummynose Tetra - Hemigrammus bleheri
Russian Bitterling - Acanthorhodeus asmussi
Russian Weather Loach - Misgurnus bipartitusis
Rusty Frogmouth Catfish - Chaca bankanensis