Species
Browsing 723 species. Use the filters below to narrow down.
Multibar Angelfish
FishCentropyge multifasciata
A deep-dwelling pygmy angel that rarely makes it into the hobby.
Multicolor angelfish
FishCentropyge multicolor
A deep-reef dweller with bold coloring that rarely makes it to store shelves.
Multifasciatus
FishNeolamprologus multifasciatus
Possibly the world's smallest cichlid, big attitude packed into a tiny shell.
Mystery Wrasse
FishPseudocheilinus ocellatus
A secretive reef wrasse with bold colors and a talent for disappearing.
Mystic Mystus
FishMystus mysticetus
A gregarious Southeast Asian catfish with a uniquely lateral-eyed look.
Namak
FishAphanius arakensis
A rare Iranian killifish relative worth keeping for conservation as much as curiosity.
Nemacheilus guentheri
FishMesonoemacheilus guentheri
A pebble-stream loach from India with famously unpredictable mood swings.
Neon Dottyback
FishPseudochromis aldabraensis
A bold little reef dweller that punches well above its weight in personality.
Neon Highfin Barb
FishOreichthys crenuchoides
A tiny barb with a sail-like dorsal fin and surprisingly complex social dynamics.
Niger Triggerfish
FishOdonus niger
Red teeth, blue body, and a personality that commands the whole tank.
Night Aulonocara
FishAulonocara hueseri
A sand-sifting peacock cichlid with deep blue coloration from Lake Malawi's rocky shores.
Nile Bichir
FishPolypterus bichir
A living fossil that breathes air and moves like an eel.
Nile squeaker
FishSynodontis schall
The unpredictable bruiser of the Synodontis world, not for community tanks.
Nkhomo-benga Peacock
FishAulonocara baenschi
A peacock cichlid with a curved snout and brilliant gold coloration from Lake Malawi.
Noble Gourami
FishCtenops nobilis
The noble gourami: a labyrinth fish that spits its eggs straight into dad's mouth.
Oaxaca Cichlid
FishVieja zonata
A rare Mexican cichlid with big personality and even bigger space requirements.
Obliquidens Hap
FishHaplochromis obliquidens
A scrappy Victorian cichlid with a taste for algae and a bold personality.
Ocellated Lionfish
FishDendrochirus biocellatus
A shy, venomous reef dweller that hides by day and hunts by night.
Ocellated Puffer
FishTakifugu ocellatus
A surprisingly peaceful puffer with a wild lifecycle from river to reef.
Ocellated pufferfish
FishLeiodon cutcutia
A pufferfsh from Asian rivers and canals with a surprisingly long lifespan.
Ocellated Wrasse
FishHalichoeres melasmapomus
A bold cheek-spotted wrasse with a wide Pacific range and big personality.
Ocellifer Catfish
FishSynodontis ocellifer
A hardy West African catfish with bold spots and a long, distinctive adipose fin.
Octopus Coral
CoralGalaxea astreata
A sprawling, tentacled coral with surprisingly sharp defensive reach.
Octopus Coral
CoralGalaxea paucisepta
A small, textured reef coral with a knobby skeleton and calm disposition.
Odessa Barb
FishPethia padamya
A barb with a mysterious past and males that blaze red when rivals are near.
Okavango Tilapia
FishTilapia ruweti
A compact African cichlid with big personality from wild swamp habitats.
One-stripe Spiny Eel
FishMacrognathus aculeatus
A serpentine burrower with a single bold stripe and a secretive personality.
Opsarius ardens
FishBarilius ardens
A fast-moving Western Ghats minnow that needs space, speed, and bold companions.
Opsarius malabaricus
FishBarilius malabaricus
A fast, bold river minnow from India's Western Ghats that needs room to move.
Orange Ball Anemone
CoralPseudocorynactis caribbeorum
A nocturnal Caribbean predator with sticky orange-tipped tentacles that can snag small fish.
Orange Ctenopoma
FishMicroctenopoma ansorgii
A jewel-toned African labyrinth fish that rewards patient, experienced keepers.
Orange dwarf toothcarp
FishNeoheterandria elegans
A tiny Colombian livebearer with a fascinating near-mammalian reproductive twist.
Orange Head
FishGeophagus sp. "Orange Head"
A vividly capped cichlid that rewards patient keepers with fascinating mouthbrooding family life.
Orchid Dottyback
FishPseudochromis fridmani
A bold little Red Sea endemic that punches well above its weight.
Orinoco
FishAndinoacara sp. "Orinoco"
A mellow Orinoco cichlid that pairs easily and rewards patient breeders.
Ornate Bichir
FishPolypterus ornatipinnis
An ancient, armored predator that breathes air and prowls the night.