Species
Browsing 588 species. Use the filters below to narrow down.
Blackband Copella
FishCopella callolepis
A tiny Amazonian schooler that rewards patience with vivid courtship displays.
Black-ear Pacu
FishMyleus schomburgkii
A disc-shaped, plant-munching pacu with a bold black flank bar and surprisingly peaceful nature.
Black-headed Leatherjacket
FishPervagor melanocephalus
A secretive reef filefish that pairs up and lurks among coral-rich ledges.
Black Imbellis
FishBetta siamorientalis
A tiny bubble-nesting betta with a blackish body and vivid red fin details.
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.
Blackline Penguinfish
FishThayeria boehlkei
The tetra that swims nose-up and wears a bold racing stripe to its tail.
Black Lizard Loach
FishBalitoropsis zollingeri
A flat-bodied stream crawler that hops and clings across rocks like no other loach.
Black Moor Goldfish
FishCarassius auratus var. blackmoor
The velvety, telescope-eyed goldfish that turns heads in any pond or tank.
Black Rabbit Snail
InvertTylomelania zemis
A slow-moving, long-lived snail that grazes peacefully and breeds one giant baby at a time.
Black-spotted Boxfish
FishOstracion cubicus
Adorable cube-shaped reef fish that hides a dangerous chemical defense.
Black Spotted Catfish
FishAuchenoglanis biscutatus
A giant, gentle African catfish that cruises the bottom with calm authority.
Black Spotted Sea Star
InvertFromia milleporella
A vivid red sea star with bold black spots, gentle on reef inhabitants.
Blackspotted Toothcarp
FishPhallichthys tico
A tiny, peaceful livebearer from Costa Rica's murky highland streams.
Blacktop Catfish
FishCorydoras acutus
A sharp-snouted little armored catfish with a bold black dorsal spot.
Black Venezuelan Corydoras (Tank-Bred)
FishCorydoras schultzei
A rare, captive-bred cory with deep black coloration and charming schooling behavior.
Black-winged Hatchetfish
FishCarnegiella marthae
A tiny, deep-chested surface dweller that will absolutely find any gap in your lid.
Bladder Snail
InvertPhysella acuta
The unstoppable little snail that thrives where others fail.
Bleeding Heart Tetra
FishHyphessobrycon socolofi
The bleeding heart tetra rewards patient keepers with spectacular male rivalry displays.
Blueback Blue-eye
FishPseudomugil cyanodorsalis
A tiny blue-backed rainbowfish relative from Australia's brackish mangrove creeks.
Blueberry Tetra
FishHyphessobrycon wada
A tiny tetra with a purple-blue body and vivid orange fins that deepen with age.
Blue danio
FishDanio kerri
A powder-blue schooling gem from the Malay Peninsula that's rarely seen but easy to keep.
Blue-eyed Catfish
FishAmblydoras nauticus
A hardy little catfish that talks in the dark and rarely shows its face by day.
Blue Flasher-wrasse
FishParacheilinus cyaneus
A reef-dwelling wrasse that sleeps wrapped in its own slime cocoon every night.
Blue Hillstream Trout
FishOpsarius bernatziki
A fast, bold hillstream schooler with vivid blue flank bars and serious attitude.
Blue Leg Hermit Crab
InvertClibanarius tricolor
A tiny, tireless reef cleaner with vivid blue legs and a big appetite for algae.
Blue Leg Poso Shrimp
InvertCaridina cf babaulti
A delicate little shrimp from an ancient Indonesian lake with vivid blue legs.
Blue Linckia Starfish
InvertLinckia laevigata
A vivid blue star from Indo-Pacific reefs, built for the patient reef keeper.
Blue-lined Rasbora
FishTrigonopoma gracile
A delicate blackwater rasbora with variable color forms from Borneo's forest streams.
Bluespine Unicornfish
FishNaso unicornis
A true horn-nosed giant that demands a serious reef setup to thrive.
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.
Blue Tilapia
FishOreochromis aureus
A cold-tolerant tilapia with surprising hardiness and a calm, active personality.
Boeseman's Cory
FishCorydoras boesemani
A tiny armored catfish from Suriname that breathes air and stays rare in the hobby.
Boeseman's Rainbowfish
FishMelanotaenia boesemani
Two fish in one body: bold orange rear, cool blue-grey front.
Boldingh's Ghostgoby
FishPleurosicya boldinghi
A tiny, transparent goby that spends its whole life clinging to soft corals.