Species
Browsing 2,303 species. Use the filters below to narrow down.
Rainbow Goodeid
FishCharacodon lateralis
A rare Mexican livebearer with a complicated identity and real conservation value.
Rainbow Prigi
FishHypseleotris guentheri
A small Pacific stream goby comfortable in fresh, brackish, or salt water.
Rainbow Shark
FishEpalzeorhynchos frenatus
A bold, territorial bottom-dweller with vivid red fins and a big personality.
Rainbow Shiner (Tank-Bred)
FishNotropsis chrosomus
A native North American minnow that transforms into a living jewel come breeding season.
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.
Raja Betta
FishBetta raja
A wild Sumatran mouthbrooder with dramatic fins and a gentle personality.
Ranchu Goldfish
FishCarassius auratus var. ranchu
The roly-poly fancy goldfish bred to look like a swimming raspberry.
Randall's Prawn-goby
FishAmblyeleotris randalli
A reef sand-dweller that shares its burrow with a pistol shrimp partner.
Ranger Pleco
FishPterygoplichthys weberi
A hard-working algae grazer from Amazonian headwaters with a remarkable breathing trick.
Raphael catfish
FishPlatydoras costatus
A bold-striped catfish that grunts, buries itself, and eats almost anything.
Raspy River Stingray
FishPotamotrygon scobina
A rare freshwater ray that often gets misidentified and mis-sold in the trade.
Red-backed Paradisefish
FishMacropodus erythropterus
A rarely traded Vietnamese paradisefish with red fins and a complex identity
Red Badis
FishBadis ruber
A secretive cave-spawning micro-predator with fascinating breeding behavior and bold flank markings.
Red Barred Killi
FishAphyosemion elberti
A small, manageable killifish with bold markings from Central African stream systems.
Red-bellied Pacu
FishPiaractus brachypomus
A fruit-eating giant that outgrows nearly every home aquarium.
Red-bellied Piranha
FishPygocentrus nattereri
The world's most notorious fish, and surprisingly misunderstood in the wild.
Redbelly Tilapia
FishTilapia zillii
A tank-busting herbivore that will devour your plants and ask for more.
Redbreast Acara
FishLaetacara dorsigera
A tiny South American cichlid with a boldly colored chest and a gentle personality.
Red Devil
FishAmphilophus labiatus
A notoriously aggressive cichlid that somehow also becomes your best friend.
Red Dwarf Rasbora
FishMicrorasbora rubescens
A tiny Lake Inle gem that truly shines when kept in a proper-sized school.
Red-eared Slider
FishTrachemys scripta elegans
A long-lived turtle that outlasts most aquariums. And many life plans.
Red Empress
FishProtomelas taeniolatus
A Lake Malawi rock dweller sold under flashy trade names, worth every bit of the hype.
Redeye Piranha
FishSerrasalmus rhombeus
A solitary, powerfully-jawed predator best kept as a single specimen by dedicated keepers.
Redeye Puffer
FishCarinotetraodon lorteti
A tiny puffer with dramatic color-changing ability and surprisingly long lifespan.
Redeye Tetra
FishMoenkhausia oligolepis
A peaceful, easy-to-breed South American tetra often mistaken for its flashier cousin.
Red-eye Wrasse
FishCirrhilabrus solorensis
A reef-dweller that actually uses coral cover, not just open rubble.
Red Fin Banded Pencilfish
FishNannostomus erythrurus
A slender, vividly finned pencilfish that rewards patient, detail-oriented keepers.
Red-finned Loach
FishYasuhikotakia lecontei
A sociable loach with complex group dynamics and real personality to match.
Redfin Pickerel
FishEsox americanus americanus
A pint-sized ambush predator that turns patience into a hunting superpower.
Redfin River Barb
FishCyclocheilichthys janthochir
A rarely imported Bornean cyprinid with vivid red fin markings and a gregarious personality.
Red Fin Shark
FishEpalzeorhynchos munense
A rarely seen shark with a jet-black body and vivid red fins from Southeast Asian rivers.
Redfin Two-banded Carplet
FishPethia reval
A tiny Sri Lankan barb with vivid red fins and an easy-going nature.
Redflank Bloodfin
FishAphyocharax rathbuni
A fin-nipping schooler that rewards careful community planning with lively, colorful energy.
Red Garra
FishGarra rufa
The original 'doctor fish', famous for nibbling skin long before spa treatments existed.
Red Hawkfish
FishNeocirrhites armatus
A vivid red percher that rules its corner of the reef from a favorite rock.