Species
Browsing 396 species. Use the filters below to narrow down.
Rainbow Cichlid
FishHerotilapia multispinosa
A rare Central American cichlid that actually plays well with others.
Rainbowfish
FishMelanotaenia splendida inornata
A rainbowfish that takes patience to reward, but absolutely delivers on color.
Rainbow Snakehead
FishChanna bleheri
A rare snakehead small enough for a community tank, if you choose tankmates carefully.
Rainbow wrasse
FishHalichoeres iridis
A kaleidoscopic reef wrasse that shifts color as it matures.
Ranchu Goldfish
FishCarassius auratus var. ranchu
The roly-poly fancy goldfish bred to look like a swimming raspberry.
Red-bellied Pacu
FishPiaractus brachypomus
A fruit-eating giant that outgrows nearly every home aquarium.
Red Devil
FishAmphilophus labiatus
A notoriously aggressive cichlid that somehow also becomes your best friend.
Redeye Puffer
FishCarinotetraodon lorteti
A tiny puffer with dramatic color-changing ability and surprisingly long lifespan.
Red-eye Wrasse
FishCirrhilabrus solorensis
A reef-dweller that actually uses coral cover, not just open rubble.
Redflank Bloodfin
FishAphyocharax rathbuni
A fin-nipping schooler that rewards careful community planning with lively, colorful energy.
Redline
FishDevario assamensis
A rare, deep-bodied danionid from Assam with vivid lateral striping and restless energy.
Red Lyretail Swordtail
FishXiphophorus helleri
A selectively bred swordtail with a ruffled dorsal fin and deep crimson color throughout.
Red Rainbowfish
FishGlossolepis incisus
A deep-bodied red rainbow that rewards group keeping with dazzling male displays.
Red Side Barb
FishPuntius bimaculatus
A peaceful, active schooler from South Asian streams with a vivid red flanks in males.
Red Spot Puffer
FishPao abei
A pint-sized freshwater puffer with a big attitude and sharp teeth to match.
Red-striped Rainbowfish
FishMelanotaenia splendida rubrostriata
A slow-burning rainbowfish that rewards patient keepers with spectacular adult color.
Red-tail Tinfoil Barb
FishBarbonymus altus
A bold, active schooling barb that quickly outgrows most home aquariums.
Red Terror
FishCichlasoma festae
A massive, fierce Ecuadorian cichlid that will eat anything it can fit in its mouth.
Reef Chromis
FishChromis retrofasciata
A bite-sized reef chromis that hugs branching corals and minds its own business.
Rock Beauty
FishHolacanthus tricolor
A bold Atlantic angel with dramatically different juvenile and adult coloration.
Rockmover
FishNovaculichthys taeniourus
A reef demolition crew in fish form, juvenile and adult look like different species.
Roseline Shark
FishSahyadria denisonii
The endangered Indian torpedo barb with a vivid red-and-black racing stripe
Rusty Angelfish
FishCentropyge ferrugata
A compact, reef-dwelling dwarf angel with rich rusty coloring and bold personality.
Ryukin Goldfish
FishCarassius auratus var. ryukin
The hump-backed beauty of fancy goldfish keeping, built for cool, calm ponds and tanks.
Sailfin Molly
FishPoecilia latipinna
The male's enormous sail-like dorsal fin makes this livebearer instantly recognizable.
Sailfin Molly
FishPoecilia velifera
The towering dorsal fin of this livebearer is a true showpiece when conditions are right.
sailfin tang
FishZebrasoma veliferum
A reef tang that unfurls its fins like a sail when threatened or showing off.
Sailfin Tang
FishZebrasoma velifer
Those enormous fins aren't just for show. They mean business.
Scissortail Dartfish
FishPtereleotris evides
A graceful reef dartfish that hovers in open water and pairs for life.
Scopas Tang
FishZebrasoma scopas
A reef grazer that keeps algae in check across vast Indo-Pacific waters.
Sea Walnut Comb Jelly
InvertMnemiopsis leidyi
A glowing, gelatinous predator that belongs in a very specialized setup.
Sebae Clownfish
FishAmphiprion sebae
A bold, territorial clownfish that pairs best with one specific anemone host.
Sergeant Major
FishAbudefduf saxatilis
Bold reef dweller with a notorious attitude that grows with age.
Severum
FishHeros severus
A large, easygoing cichlid with personality to spare and a surprisingly gentle nature.
Sharksucker
FishEcheneis naucrates
The fish that hitchhikes on sharks, and occasionally tries to attach to divers.
Shortfin Molly
FishPoecilia mexicana
The wild ancestor of the molly we all know, built for tough conditions.