Southeast Asia
The Mekong, Chao Phraya, and the rivers of Borneo, Sumatra, and Java — home to bettas, gouramis, rasboras, barbs, and many iconic community fish.
460 species · freshwater
Other regions in Asia
Pontian Betta
FishBetta pulchra
A secretive peat swamp betta that broods its young in the father's mouth.
Princess Carplet
FishAmblypharyngodon chulabhornae
A tiny, peaceful Thai schooling fish that rarely makes it into the hobby.
Puntius Sp. Pearlscale
FishPethia stoliczkana
A peaceful schooling barb from mainland Southeast Asia, best kept in numbers.
Purple Cypris
FishDevario sp. "Purple Cypris"
A rare schooling danionid with bold lateral bars and competitive male displays.
Purple Passion Danio
FishBrachydanio rosea
A peaceful, colorful little danio that thrives in numbers and suits any community setup.
Pygmy Rasbora
FishBoraras maculatus
A pea-sized schooling fish that rewards patience with dazzling group displays.
Queen Danio
FishDevario regina
A bold, deep-bodied danionid that thrives in fast-moving company.
Rabbit Snail
InvertTylomelania sp.
Slow-moving, long-lived snails with a face only a hobbyist could love.
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.
Raja Betta
FishBetta raja
A wild Sumatran mouthbrooder with dramatic fins and a gentle personality.
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 Devil Vampire Crab
InvertGeosesarma dennerle
Jewel-bright mini crabs that thrive in paludarium setups with minimal fuss.
Redeye Puffer
FishCarinotetraodon lorteti
A tiny puffer with dramatic color-changing ability and surprisingly long lifespan.
Red-finned Loach
FishYasuhikotakia lecontei
A sociable loach with complex group dynamics and real personality to match.
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.
Red Racer Nerite Snail
InvertVittina waigiensis
A bold, patterned algae-eater that never reproduces in freshwater tanks.
Red Rainbowfish
FishGlossolepis incisus
A deep-bodied red rainbow that rewards group keeping with dazzling male displays.
Red Spotted Nerite Snail
InvertClithon diadema
A boldly patterned algae grazer that keeps glass and hardscape spotless.
Red-striped Rainbowfish
FishMelanotaenia splendida rubrostriata
A slow-burning rainbowfish that rewards patient keepers with spectacular adult color.
Red-striped Rasbora
FishRasbora pauciperforata
A slender, red-striped schooler that thrives in soft, tannin-rich blackwater setups.
Redtail Barb
FishDischerodontus ashmeadi
A rare, bottom-dwelling schooler with vivid red-tipped fins and secretive nocturnal habits.
Red-tailed Black Shark
FishCyclocheilos enoplos
A giant Southeast Asian river fish that belongs in public aquaria, not home tanks.
Red Tail Shark
FishEpalzeorhynchos bicolor
Bold looks, bolder attitude. This Thai native demands respect in any tank.
Red-tail Tinfoil Barb
FishBarbonymus altus
A bold, active schooling barb that quickly outgrows most home aquariums.
Reticulated Flying Fox
FishCrossocheilus reticulatus
A fishnet-patterned grazer that thrives in a lively, well-matched community.
Reticulated Hillstream Loach
FishSewellia lineolata
A bold hillstream loach with bold patterning and surprisingly easy breeding.
Rice Eel or Rice Field Eel
FishMonopterus albus
A land-crossing, air-breathing swamp predator that isn't actually an eel at all.
Rosy Danio
FishDanio roseus
A rosy-hued schooling danio that thrives in lively community tanks.
Rosy Loach
FishYunnanilus sp. "Rosy"
A rosy little loach that punches above its weight in personality.
Royal Featherback
FishChitala blanci
A massive Mekong predator that will outgrow almost any home aquarium.
Sabah Danio
FishNematabramis everetti
A Bornean river minnow with dramatically long barbels and a bold shoulder patch.
Sabanus Bumblebee Goby
FishBrachygobius sabanus
A tiny brackish goby with bold banding and a big territorial attitude.
Saddle Barb
FishBarbodes banksi
A rare Bornean barb with a distinctive wedge marking, seldom seen outside specialist circles.