Species
Browsing 891 species. Use the filters below to narrow down.
Black spot piranha
FishPygocentrus cariba
The Orinoco's apex predator, wrapped in myth and surprisingly manageable alone.
Black-spotted Boxfish
FishOstracion cubicus
Adorable cube-shaped reef fish that hides a dangerous chemical defense.
Black-spotted Pufferfish
FishArothron nigropunctatus
A bold reef grazer that will rearrange your coral collection without asking.
Blackspotted Toothcarp
FishPhallichthys tico
A tiny, peaceful livebearer from Costa Rica's murky highland streams.
Blackstripe Cardinalfish
FishApogon nigrofasciatus
A secretive reef-dweller that comes alive after dark to hunt the rubble.
Blacktail Catfish
FishHemibagrus wyckii
A river giant that sees humans as a threat. And acts on it.
Black Triggerfish
FishSufflamen chrysopterum
A hardy, boldly patterned triggerfish with a surprisingly calm disposition for the group.
Black-winged Hatchetfish
FishCarnegiella marthae
A tiny, deep-chested surface dweller that will absolutely find any gap in your lid.
Bleeding Heart Tetra
FishHyphessobrycon pyrrhonotus
The rarest bleeding heart tetra, with a vivid red wedge only it can claim.
Bleeding Heart Tetra
FishHyphessobrycon socolofi
The bleeding heart tetra rewards patient keepers with spectacular male rivalry displays.
Blotched Snakehead
FishChanna maculata
A predatory bruiser that breathes air and guards its young with fierce devotion.
Blue Acara
FishAndinoacara pulcher
A forgiving cichlid with real personality, perfect for community tanks with medium-sized fish.
Blue Botia
FishYasuhikotakia modesta
A sociable Mekong loach with vivid fins and a complex social life.
Blue Cheek Dwarf Cichlid
FishApistogramma eunotus
A compact Peruvian dwarf cichlid with serious parenting instincts and big personality.
Blue Chromis
FishChromis cyaneus
A cool-blue schooling fish that brings open-water energy to reef tanks.
Blue Diamond Characin
FishAlestopetersius smykalai
A rare West African schooler with a bold diamond marking and fascinating male rivalry displays.
Blue Emperor Tetra
FishInpaichthys kerri
Tiny tetra with big color rivalry. Males glow brightest when competing for attention.
Blue-eyed Catfish
FishAmblydoras nauticus
A hardy little catfish that talks in the dark and rarely shows its face by day.
Bluefin Notho
FishNothobranchius rachovii
A fish that lives fast, dies young, and leaves spectacular eggs behind.
Blue Flasher-wrasse
FishParacheilinus cyaneus
A reef-dwelling wrasse that sleeps wrapped in its own slime cocoon every night.
Bluehead Wrasse
FishThalassoma amblycephalum
A reef-dwelling wrasse with bold color phases and a peaceful community nature.
Blue Jaw Triggerfish
FishXanthichthys auromarginatus
A long-lived, manageable trigger that actually leaves your rockwork alone.
Blue Killi
FishFundulopanchax filamentosus
Ornate West African killifish with flowing fins and a taste for live food.
Blue Kumu
FishParupeneus cyclostomus
A reef-flat hunter that uses whisker-like barbels to sniff out hidden prey.
Blue-lined Rasbora
FishTrigonopoma gracile
A delicate blackwater rasbora with variable color forms from Borneo's forest streams.
Blueline rasbora
FishRasbora einthovenii
A peaceful forest-stream rasbora with a charmingly crinkled lateral stripe.
Blue Lyretail
FishFundulopanchax gardneri gardneri
A hardy, colorful killifish that's genuinely beginner-friendly and easy to breed.
Blue Neon Cichlid
FishParacyprichromis nigripinnis
A peaceful Tanganyikan schooler that hangs vertically against rock walls to spawn.
Blue Neon Sheatfish
FishKryptopterus apogon
A massive river predator sometimes sold to unsuspecting buyers as a cute juvenile.
Blue Notho
FishNothobranchius patrizii
A tiny annual killifish built for life in pools that disappear.
Blue Perch
FishBadis badis
A color-changing micro-predator that hides, watches, and ambushes with surprising intensity.
Blue-scaled Fairy Wrasse
FishCirrhilabrus cyanopleura
A roving reef wrasse that brings shimmering blue flanks to the open water column.
Bluespot Rockcod
FishCephalopholis miniata
A brilliantly spotted reef predator that commands attention in any large display tank.
Bluespotted Lagoon Ray
FishTaeniura lymma
A reef ray that looks incredible but rarely thrives in captivity.
Blue-spotted Mudskipper
FishBoleophthalmus boddarti
A fish that walks on mud and breathes air at the tide's edge.
Blue-spotted Puffer
FishArothron caeruleopunctatus
One of the largest puffers you can keep, and surprisingly blue.