The Americas
From the Amazon's blackwater basins to Caribbean reefs — the Americas hold the most popular freshwater biotopes and a wealth of Atlantic and Pacific saltwater life.
1,013 species
Sub-regions
Blue Acara
FishAndinoacara pulcher
A forgiving cichlid with real personality, perfect for community tanks with medium-sized fish.
Blueberry Tetra
FishHyphessobrycon wada
A tiny tetra with a purple-blue body and vivid orange fins that deepen with age.
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 Cory
FishCorydoras nattereri
A long-lived, sociable bottom-dweller that breathes air and blinks at you.
Blue Crayfish
InvertProcambarus alleni
Florida's boldest crustacean, in an almost unreal shade of blue.
Blue Crust Coral
CoralPorites branneri
A rare blue encrusting coral that forms textured plates with nodular ridges.
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-eye Plec
FishPanaque suttonorum
A wood-rasping Venezuelan plec with vivid blue eyes that glow in the right light.
Blue Leg Hermit Crab
InvertClibanarius tricolor
A tiny, tireless reef cleaner with vivid blue legs and a big appetite for algae.
Bluemouth Cichlid
FishAmphilophus nourissati
A bold Central American cichlid from ancient Mayan river country, built for character.
Blue Panda Cichlid
FishApistogramma panduro
A tiny Peruvian cichlid with a bold personality and cave-spawning habits.
Blue Rainbow
FishScarus guacamaia
The largest Atlantic parrotfish, built for reefs but almost impossible to keep captive.
Blue Ribbon Tetra
FishHyphessobrycon melanostichos
A feisty little tetra that behaves best when kept in numbers
Bluestripe Pipefish
FishDoryrhamphus excisus
A secretive reef pipefish that pairs for life and fits in tight crevices.
Blue Tang
FishAcanthurus coeruleus
A bold Atlantic surgeon fish known for cleaning sea turtles in the wild.
Blue Tetra
FishBoehlkea fredcochui
A petite Amazonian schooler that thrives when kept in numbers.
Blue Tetra
FishMimagoniates microlepis
A rare coastal-stream tetra with an unusual internal fertilization strategy.
Blue Tilapia
FishOreochromis aureus
A cold-tolerant tilapia with surprising hardiness and a calm, active personality.
Blunthead Triggerfish
FishPseudobalistes naufragium
A giant, reef-wrecking curious personality from the Eastern Pacific.
Blushing Star Coral
CoralStephanocoenia intersepta
A demanding Atlantic reef-builder with a subtle rosy flush and tight corallite patterning.
Boesemani Tetra
FishHemigrammus boesemani
A rarely seen French Guiana tetra that rewards patient hunters with peaceful charm.
Boeseman's Cory
FishCorydoras boesemani
A tiny armored catfish from Suriname that breathes air and stays rare in the hobby.
Bolivia Cichlid
FishCichlasoma boliviense
A compact South American cichlid that punches above its weight in personality.
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.
Bolivian Whiptail Catfish
FishHemiloricaria beni
A petite Bolivian whiptail catfish with a surprising ability to breathe air.
Bottle-brush Coral
CoralMuriceopsis flavida
A bushy Western Atlantic sea plume that's surprisingly forgiving for new reef keepers.
Boulder Brain Coral
CoralColpophyllia natans
A classic Atlantic brain coral that grows into impressive dome-shaped colonies over time.
Boulder Star Coral
CoralOrbicella faveolata
A reef-building heavyweight that has shaped Caribbean reefs for millennia.
Brain Coral
CoralColpophyllia breviserialis
A rare Atlantic brain coral with accessible care needs and genuine reef credentials.
Brain Coral
CoralDiploria labyrinthiformis
A classic Caribbean brain coral with bold, maze-like ridges built for the long haul.