Species
Browsing 2,303 species. Use the filters below to narrow down.
Blue Assessor
FishAssessor macneilli
A cave-dwelling reef basslet that swims upside-down like it owns the place.
Blueback Blue-eye
FishPseudomugil cyanodorsalis
A tiny blue-backed rainbowfish relative from Australia's brackish mangrove creeks.
Bluebanded Angelfish
FishPygoplites diacanthus
One of the reef's most recognizable angels, and one of its trickiest to keep.
Blue Banded Barb
FishBarbus fasciolatus
A rarely exported African barb with bold vertical bars and crepuscular habits.
Blue-banded Pualu
FishAcanthurus blochii
A long-lived, schooling surgeon with a mood-shifting palette and a blade to match.
Blueberry Tetra
FishHyphessobrycon wada
A tiny tetra with a purple-blue body and vivid orange fins that deepen with age.
Blue Botia
FishYasuhikotakia modesta
A sociable Mekong loach with vivid fins and a complex social life.
Blue Caribe
FishSerrasalmus altuvei
A rare, solitary piranha relative that's harder to identify than to keep.
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 Chromis
FishChromis cyanea
A cool-blue schooling fish that brings open-water energy to reef tanks.
Blue Cichlid
FishNanochromis nudiceps
A compact Congo cichlid with a violet belly and real personality in a small package.
Blue Cory
FishCorydoras nattereri
A long-lived, sociable bottom-dweller that breathes air and blinks at you.
Blue danio
FishDanio kerri
A powder-blue schooling gem from the Malay Peninsula that's rarely seen but easy to keep.
Blue Devil
FishChrysiptera cyanea
Vivid blue and boldly territorial, this tiny fish punches well above its weight.
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-eye Cichlid
FishCryptoheros spilurus
A compact Central American cichlid with fierce pair bonds and big personality.
Blue-eyed Catfish
FishAmblydoras nauticus
A hardy little catfish that talks in the dark and rarely shows its face by day.
Blue-eyed Tropheus
FishTropheus brichardi
A Lake Tanganyika cichlid that rewards patience with fascinating colony dynamics.
Blue-eye Plec
FishPanaque suttonorum
A wood-rasping Venezuelan plec with vivid blue eyes that glow in the right light.
Blue-finned Triggerfish
FishBalistoides viridescens
The largest triggerfish alive, and it knows it.
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.
Blue Girdled Angel
FishPomacanthus navarchus
A bold reef resident with one of the most dramatic color transitions in marine fishkeeping.
Bluegray Mbuna
FishMelanochromis johanni
A Lake Malawi rock-dweller with bold colors and bolder attitude.
Blue-green Chromis
FishChromis viridis
A shimmering, peaceful schooling fish that brings reef lagoons to life in your tank.
Bluehead Wrasse
FishThalassoma amblycephalum
A reef-dwelling wrasse with bold color phases and a peaceful community nature.
Blue Hillstream Trout
FishOpsarius bernatziki
A fast, bold hillstream schooler with vivid blue flank bars and serious attitude.
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.
Blue-lined Sea Bream
FishSymphorichthys spilurus
A bold reef-associated snapper that grows into a true centerpiece fish.
Bluelined Wrasse
FishCirrhilabrus lineatus
A lavender-and-pink fairy wrasse that turns heads in any reef tank.
Blueline rasbora
FishRasbora einthovenii
A peaceful forest-stream rasbora with a charmingly crinkled lateral stripe.