Species
Browsing 1,508 species. Use the filters below to narrow down.
Naked Characin
FishGymnocharacinus bergi
A scaleless South American oddity from one of the world's most isolated streams.
Nantaiensis Goby
FishRhinogobius nantaiensis
A feisty Taiwanese stream goby that rewards patient, experienced keepers.
Narrow-bellied Seahorse
FishHippocampus angustus
A spiny Western Australian seahorse with a distinctively slender profile.
Narrow-lined Puffer
FishArothron manilensis
A bold, beak-toothed puffer that thrives from mangroves to lagoon reefs.
necklace nassa
InvertNassarius distortus
A tidy little scavenger from the Yaeyama Islands with a distinctively ornate shell.
Neon Blue Rasbora
FishSundadanio axelrodi
Tiny blackwater gem that rewards patient keepers with dazzling group behavior.
Neon Dwarf Rainbowfish
FishMelanotaenia praecox
Tiny rainbowfish that turns up the color when kept in a proper shoal.
Neon Goby
FishElacatinus oceanops
A tiny cleaner fish that runs its own reef spa service.
Network Cory
FishCorydoras reticulatus
A fine-patterned bottom dweller that lives surprisingly long in good company.
Nierstrasz's Coral
CoralPsammocora nierstraszi
A rugged, wave-battered coral with deeply wandering valleys and a rough, textured surface.
Niger Triggerfish
FishOdonus niger
Red teeth, blue body, and a personality that commands the whole tank.
Nijssen's cory
FishCorydoras nijsseni
A rare Rio Negro cory with bold patterning and a surprisingly long lifespan.
Nile Bichir
FishPolypterus bichir
A living fossil that breathes air and moves like an eel.
Nilgiri Mystus
FishHemibagrus punctatus
A rare, spot-flanked Indian catfish built for serious catfish specialists only.
Ninja shrimp
InvertCaridina serratirostris
A color-shifting freshwater shrimp that can vanish right before your eyes.
Nkhomo-benga Peacock
FishAulonocara baenschi
A peacock cichlid with a curved snout and brilliant gold coloration from Lake Malawi.
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 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.
Ocellated Brain Coral
CoralCyphastrea ocellina
A compact, encrusting coral with tightly packed corallites and subtle green tones.
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.
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.
Ogre Catfish
FishAsterophysus batrachus
A gulper catfish that can swallow prey nearly twice its own size.
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.
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.