🛌Bottom dwellers
Species that spend most of their time on the substrate. Bottom dwellers add movement and interest to an often-overlooked tank zone.
428 species
Blackgullet Cichlid
FishThorichthys pasionis
A lesser-known Central American cichlid with bold personality and a distinctive dark throat.
Black Kuhli Loach
FishPangio oblonga
A slender, uniformly dark loach that loves company and hides in plain sight.
Black-lined Loach
FishAmbastaia nigrolineata
A rare, sociable loach with bold racing stripes and fascinating group behaviors.
Black Lizard Loach
FishBalitoropsis zollingeri
A flat-bodied stream crawler that hops and clings across rocks like no other loach.
Blackspot Surgeonfish
FishAcanthurus nigrofuscus
A schooling grazer that overwhelms rivals through sheer numbers.
Black Spotted Catfish
FishAuchenoglanis biscutatus
A giant, gentle African catfish that cruises the bottom with calm authority.
Blackstreak Surgeonfish
FishAcanthurus nigricauda
A wide-ranging Indo-Pacific grazer that bucks the typical surgeonfish habitat
Black-throated Eartheater
FishGeophagus brachybranchus
A sand-sifting eartheater with elaborate mouthbrooding parental care and a surprisingly gentle nature.
Blacktop Catfish
FishCorydoras acutus
A sharp-snouted little armored catfish with a bold black dorsal spot.
Blind Cave Loach
FishNemacheilus troglocataractus
A blind, cave-dwelling loach from a single Thai cave system.
Blind Cave Loach
FishSchistura jarutanini
A blind cave loach from Thailand that science knows from just 22 specimens.
Blue Botia
FishYasuhikotakia modesta
A sociable Mekong loach with vivid fins and a complex social life.
Blue Cory
FishCorydoras nattereri
A long-lived, sociable bottom-dweller that breathes air and blinks at you.
Blue-eyed Catfish
FishAmblydoras nauticus
A hardy little catfish that talks in the dark and rarely shows its face by day.
Blue-green Chromis
FishChromis viridis
A shimmering, peaceful schooling fish that brings reef lagoons to life in your tank.
Blue-lip Anemonefish
FishAmphiprion latezonatus
A rare Australian clownfish with bold white bands and a surprisingly deep blue lip.
Blue Neon Cichlid
FishParacyprichromis nigripinnis
A peaceful Tanganyikan schooler that hangs vertically against rock walls to spawn.
Blue Neon Goby
FishStiphodon atropurpureus
A thumbnail-sized stream goby that grazes biofilm and occasionally vanishes into the sand.
Bluespotted Jawfish
FishOpistognathus rosenblatti
A colonial burrower that tucks itself in every night like clockwork.
Blue-spotted Mudskipper
FishBoleophthalmus boddarti
A fish that walks on mud and breathes air at the tide's edge.
Boeseman's Cory
FishCorydoras boesemani
A tiny armored catfish from Suriname that breathes air and stays rare in the hobby.
Bolivian Cory
FishCorydoras bilineatus
A long-lived Bolivian cory that breathes air and blinks at you.
Bolivian Ram
FishMikrogeophagus altispinosus
The hardier, more forgiving cousin of the popular ram cichlid.
Bolivian thorny catfish
FishTrachydoras steindachneri
A seldom-seen Amazonian thorny catfish that plays well with smaller tankmates.
Borneo Loach
FishPangio shelfordii
A patterned eel-loach from Borneo's blackwater forests, with surprising personality for its size.
Borneo Sucker
FishGastromyzon ctenocephalus
A tiny Bornean hillstream crawler with iridescent blue fins and bold spotted patterns.
Borneo Sucker
FishGastromyzon farragus
A tiny Bornean stream-clinger with a vivid red tail and bold territorial streaks.
Borneo Sucker
FishGastromyzon stellatus
A boldly spotted Bornean stream crawler that grazes rocks like a tiny vacuum.
Brazilian Basslet
FishGramma brasiliensis
A cave-dwelling Brazilian basslet that happily swims upside down along rocky ceilings.
Bristlenose Catfish
FishAncistrus macrophthalmus
A compact Venezuelan bushynose with the rare ability to breathe air directly.
Bristlenose Pleco
FishAncistrus dolichopterus
The classic bristlenose pleco, with a face full of tentacles and a big personality.
Bristlenose Pleco
FishAncistrus cirrhosus
The algae-scrubbing catfish with a face only a fishkeeper could love.
Britski's Catfish
FishBrochis britskii
A deep-bodied armored catfish with an unusually tall dorsal fin and peaceful nature.
Britski's Cory
FishCorydoras britskii
A big-dorsal Cory with armored charm, best kept in a lively group.
Broad stripe cory
FishCorydoras duplicareus
A long-lived armored catfish with a bold nape patch and a tricky look-alike
Bronze Cory
FishCorydoras aeneus
The beginner-friendly bottom dweller that breathes air and blinks at you.