Aquariumpro
🔍

🛌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
✨AI

Blackgullet Cichlid

Fish

Thorichthys pasionis

A lesser-known Central American cichlid with bold personality and a distinctive dark throat.

Black Kuhli Loach

Black Kuhli Loach

Fish

Pangio oblonga

A slender, uniformly dark loach that loves company and hides in plain sight.

Black-lined Loach

Black-lined Loach

Fish

Ambastaia nigrolineata

A rare, sociable loach with bold racing stripes and fascinating group behaviors.

Black Lizard Loach

Black Lizard Loach

Fish

Balitoropsis zollingeri

A flat-bodied stream crawler that hops and clings across rocks like no other loach.

Blackspot Surgeonfish

Blackspot Surgeonfish

Fish

Acanthurus nigrofuscus

A schooling grazer that overwhelms rivals through sheer numbers.

Black Spotted Catfish
✨AI

Black Spotted Catfish

Fish

Auchenoglanis biscutatus

A giant, gentle African catfish that cruises the bottom with calm authority.

Blackstreak Surgeonfish

Blackstreak Surgeonfish

Fish

Acanthurus nigricauda

A wide-ranging Indo-Pacific grazer that bucks the typical surgeonfish habitat

Black-throated Eartheater
✨AI

Black-throated Eartheater

Fish

Geophagus brachybranchus

A sand-sifting eartheater with elaborate mouthbrooding parental care and a surprisingly gentle nature.

Blacktop Catfish
✨AI

Blacktop Catfish

Fish

Corydoras acutus

A sharp-snouted little armored catfish with a bold black dorsal spot.

Blind Cave Loach
✨AI

Blind Cave Loach

Fish

Nemacheilus troglocataractus

A blind, cave-dwelling loach from a single Thai cave system.

Blind Cave Loach
✨AI

Blind Cave Loach

Fish

Schistura jarutanini

A blind cave loach from Thailand that science knows from just 22 specimens.

Blue Botia

Blue Botia

Fish

Yasuhikotakia modesta

A sociable Mekong loach with vivid fins and a complex social life.

Blue Cory

Blue Cory

Fish

Corydoras nattereri

A long-lived, sociable bottom-dweller that breathes air and blinks at you.

Blue-eyed Catfish
✨AI

Blue-eyed Catfish

Fish

Amblydoras nauticus

A hardy little catfish that talks in the dark and rarely shows its face by day.

Blue-green Chromis

Blue-green Chromis

Fish

Chromis viridis

A shimmering, peaceful schooling fish that brings reef lagoons to life in your tank.

Blue-lip Anemonefish

Blue-lip Anemonefish

Fish

Amphiprion latezonatus

A rare Australian clownfish with bold white bands and a surprisingly deep blue lip.

Blue Neon Cichlid

Blue Neon Cichlid

Fish

Paracyprichromis nigripinnis

A peaceful Tanganyikan schooler that hangs vertically against rock walls to spawn.

Blue Neon Goby

Blue Neon Goby

Fish

Stiphodon atropurpureus

A thumbnail-sized stream goby that grazes biofilm and occasionally vanishes into the sand.

Bluespotted Jawfish

Bluespotted Jawfish

Fish

Opistognathus rosenblatti

A colonial burrower that tucks itself in every night like clockwork.

Blue-spotted Mudskipper

Blue-spotted Mudskipper

Fish

Boleophthalmus boddarti

A fish that walks on mud and breathes air at the tide's edge.

Boeseman's Cory

Boeseman's Cory

Fish

Corydoras boesemani

A tiny armored catfish from Suriname that breathes air and stays rare in the hobby.

Bolivian Cory

Bolivian Cory

Fish

Corydoras bilineatus

A long-lived Bolivian cory that breathes air and blinks at you.

Bolivian Ram

Bolivian Ram

Fish

Mikrogeophagus altispinosus

The hardier, more forgiving cousin of the popular ram cichlid.

Bolivian thorny catfish

Bolivian thorny catfish

Fish

Trachydoras steindachneri

A seldom-seen Amazonian thorny catfish that plays well with smaller tankmates.

Borneo Loach

Borneo Loach

Fish

Pangio shelfordii

A patterned eel-loach from Borneo's blackwater forests, with surprising personality for its size.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon ctenocephalus

A tiny Bornean hillstream crawler with iridescent blue fins and bold spotted patterns.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon farragus

A tiny Bornean stream-clinger with a vivid red tail and bold territorial streaks.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon stellatus

A boldly spotted Bornean stream crawler that grazes rocks like a tiny vacuum.

Brazilian Basslet

Brazilian Basslet

Fish

Gramma brasiliensis

A cave-dwelling Brazilian basslet that happily swims upside down along rocky ceilings.

Bristlenose Catfish
✨AI

Bristlenose Catfish

Fish

Ancistrus macrophthalmus

A compact Venezuelan bushynose with the rare ability to breathe air directly.

Bristlenose Pleco

Bristlenose Pleco

Fish

Ancistrus dolichopterus

The classic bristlenose pleco, with a face full of tentacles and a big personality.

Bristlenose Pleco
✨AI

Bristlenose Pleco

Fish

Ancistrus cirrhosus

The algae-scrubbing catfish with a face only a fishkeeper could love.

Britski's Catfish
✨AI

Britski's Catfish

Fish

Brochis britskii

A deep-bodied armored catfish with an unusually tall dorsal fin and peaceful nature.

Britski's Cory
✨AI

Britski's Cory

Fish

Corydoras britskii

A big-dorsal Cory with armored charm, best kept in a lively group.

Broad stripe cory

Broad stripe cory

Fish

Corydoras duplicareus

A long-lived armored catfish with a bold nape patch and a tricky look-alike

Bronze Cory

Bronze Cory

Fish

Corydoras aeneus

The beginner-friendly bottom dweller that breathes air and blinks at you.