Species
Browsing 2,796 species. Use the filters below to narrow down.
Norman's Lampeye
FishPoropanchax normani
Tiny West African killifish with glowing blue eyes that shimmer in low light.
Northern longsnose cory
FishCorydoras septentrionalis
A long-lived Orinoco bottom-dweller that breathes air and blinks at you.
Northern Purplespotted Gudgeon
FishMogurnda mogurnda
A bold Australian bottom-dweller with real personality and surprising breeding behavior.
Northern Rainbowfish
FishMelanotaenia affinis
One of the first rainbowfish in the hobby, now available in several wild forms.
Northern Snakehead
FishChanna argus
A true apex predator that can survive days out of water. And is banned in many countries.
Northern Star Coral
CoralAstrangia poculata
A cold-water stony coral that thrives with or without symbiotic algae.
Oaxaca Cichlid
FishVieja zonata
A rare Mexican cichlid with big personality and even bigger space requirements.
Oblique-lined Dottyback
FishCypho purpurascens
A bold little reef predator that punches well above its weight in attitude.
Ocellaris Clownfish
FishAmphiprion ocellaris
The iconic reef fish that lives fearlessly among stinging anemone tentacles.
Ocellated Brain Coral
CoralCyphastrea ocellina
A compact, encrusting coral with tightly packed corallites and subtle green tones.
Ocellated Featherback
FishChitala ornata
A prehistoric river predator that grows far larger than most tanks can handle.
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 Snakehead
FishChanna pleurophthalma
Bold ocellus markings and predatory charisma from the peat swamps of Borneo.
Ocellated Wrasse
FishHalichoeres melasmapomus
A bold cheek-spotted wrasse with a wide Pacific range and big personality.
Ocellate Freshwater Stingray
FishPotamotrygon motoro
A disc-shaped apex predator that can learn to recognize its keeper.
Octopus Coral
CoralGalaxea astreata
A sprawling, tentacled coral with surprisingly sharp defensive reach.
Octopus Coral
CoralGalaxea cryptoramosa
A branching Galaxea with detailed fused corallites and a quietly distinctive look.
Octopus Coral
CoralGalaxea longisepta
A small encrusting coral with unusually long, irregular septa and bold white rims.
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.
Ogre Catfish
FishAsterophysus batrachus
A gulper catfish that can swallow prey nearly twice its own size.
Okavango Tilapia
FishTilapia ruweti
A compact African cichlid with big personality from wild swamp habitats.
Okinawa Goby
FishGobiodon okinawae
Tiny, vivid, and inseparable from its Acropora home.
Olga
FishCorydoras simulatus
A rarely documented Colombian cory with a color pattern that keeps even experts guessing.
Olive danio
FishDanio dangila
A large, active danio with impressively long barbels and a rarely seen wild side.
Olive Nerite Snail
InvertNeritina reclivata
A tough little algae grazer that thrives where fresh and salt water meet.
One-lined Pencilfish
FishNannostomus unifasciatus
A tiny pencilfish that swims at a permanent angle, day and night.
Oneline Tetra
FishNannaethiops unitaeniatus
A peaceful little African schooler that deserves far more attention than it gets.
One-spot Eartheater
FishSatanoperca lilith
A rarely traded eartheater with a single bold flank spot and surprising social depth.
One Spot Mouthbrooder
FishBetta unimaculata
A mouthbrooding Betta from Borneo that bucks the aggressive stereotype entirely.
Onespot Squeaker
FishSynodontis notata
A daytime-active catfish with a bold personality to match its bold spot.
One-stripe Anthias
FishPseudanthias fasciatus
A deep-reef anthias famous for swimming upside-down along cave ceilings.
One-stripe Spiny Eel
FishMacrognathus aculeatus
A serpentine burrower with a single bold stripe and a secretive personality.
Opae Ula
InvertHalocaridina rubra
Tiny Hawaiian shrimp that thrives on neglect in brackish anchialine pools.