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Species

Browsing 1,789 species. Use the filters below to narrow down.

Narrow-lined Puffer

Narrow-lined Puffer

Fish

Arothron manilensis

A bold, beak-toothed puffer that thrives from mangroves to lagoon reefs.

necklace nassa

necklace nassa

Invert

Nassarius distortus

A tidy little scavenger from the Yaeyama Islands with a distinctively ornate shell.

Neon Blue Rasbora

Neon Blue Rasbora

Fish

Sundadanio axelrodi

Tiny blackwater gem that rewards patient keepers with dazzling group behavior.

Neon Dwarf Rainbowfish

Neon Dwarf Rainbowfish

Fish

Melanotaenia praecox

Tiny rainbowfish that turns up the color when kept in a proper shoal.

Neon Goby

Neon Goby

Fish

Elacatinus oceanops

A tiny cleaner fish that runs its own reef spa service.

Network Cory

Network Cory

Fish

Corydoras reticulatus

A fine-patterned bottom dweller that lives surprisingly long in good company.

Nierstrasz's Coral

Nierstrasz's Coral

Coral

Psammocora nierstraszi

A rugged, wave-battered coral with deeply wandering valleys and a rough, textured surface.

Niger Triggerfish

Niger Triggerfish

Fish

Odonus niger

Red teeth, blue body, and a personality that commands the whole tank.

Night Aulonocara

Night Aulonocara

Fish

Aulonocara hueseri

A sand-sifting peacock cichlid with deep blue coloration from Lake Malawi's rocky shores.

Nijssen's cory

Nijssen's cory

Fish

Corydoras nijsseni

A rare Rio Negro cory with bold patterning and a surprisingly long lifespan.

Nile Bichir

Nile Bichir

Fish

Polypterus bichir

A living fossil that breathes air and moves like an eel.

Nilgiri Mystus

Nilgiri Mystus

Fish

Hemibagrus punctatus

A rare, spot-flanked Indian catfish built for serious catfish specialists only.

Ninja shrimp

Ninja shrimp

Invert

Caridina serratirostris

A color-shifting freshwater shrimp that can vanish right before your eyes.

Nkhomo-benga Peacock

Nkhomo-benga Peacock

Fish

Aulonocara baenschi

A peacock cichlid with a curved snout and brilliant gold coloration from Lake Malawi.

Norman's Lampeye

Norman's Lampeye

Fish

Poropanchax normani

Tiny West African killifish with glowing blue eyes that shimmer in low light.

Northern longsnose cory

Northern longsnose cory

Fish

Corydoras septentrionalis

A long-lived Orinoco bottom-dweller that breathes air and blinks at you.

Northern Purplespotted Gudgeon

Northern Purplespotted Gudgeon

Fish

Mogurnda mogurnda

A bold Australian bottom-dweller with real personality and surprising breeding behavior.

Northern Rainbowfish

Northern Rainbowfish

Fish

Melanotaenia affinis

One of the first rainbowfish in the hobby, now available in several wild forms.

Northern Sea Fan

Northern Sea Fan

Coral

Callistephanus pallida

A graceful branching fan coral that rewards patient, experienced reef keepers.

Northern Star Coral

Northern Star Coral

Coral

Astrangia poculata

A cold-water stony coral that thrives with or without symbiotic algae.

Oaxaca Cichlid

Oaxaca Cichlid

Fish

Vieja zonata

A rare Mexican cichlid with big personality and even bigger space requirements.

Obliquidens Hap

Obliquidens Hap

Fish

Haplochromis obliquidens

A scrappy Victorian cichlid with a taste for algae and a bold personality.

Ocellated Brain Coral

Ocellated Brain Coral

Coral

Cyphastrea ocellina

A compact, encrusting coral with tightly packed corallites and subtle green tones.

Ocellated Labyrinth Fish

Ocellated Labyrinth Fish

Fish

Ctenopoma muriei

A compact African labyrinth fish that punches above its weight in personality.

Ocellated Puffer

Ocellated Puffer

Fish

Takifugu ocellatus

A surprisingly peaceful puffer with a wild lifecycle from river to reef.

Ocellated pufferfish

Ocellated pufferfish

Fish

Leiodon cutcutia

A pufferfsh from Asian rivers and canals with a surprisingly long lifespan.

Ocellated Wrasse

Ocellated Wrasse

Fish

Halichoeres melasmapomus

A bold cheek-spotted wrasse with a wide Pacific range and big personality.

Octopus Coral

Octopus Coral

Coral

Galaxea alta

A bold, spreading coral with dramatic polyp extension that commands attention.

Octopus Coral

Octopus Coral

Coral

Galaxea astreata

A sprawling, tentacled coral with surprisingly sharp defensive reach.

Octopus Coral

Octopus Coral

Coral

Galaxea cryptoramosa

A branching Galaxea with detailed fused corallites and a quietly distinctive look.

Octopus Coral

Octopus Coral

Coral

Galaxea longisepta

A small encrusting coral with unusually long, irregular septa and bold white rims.

Octopus Coral

Octopus Coral

Coral

Galaxea paucisepta

A small, textured reef coral with a knobby skeleton and calm disposition.

Ocular Coral

Ocular Coral

Coral

Madrepora oculata

A deep-sea reef builder that occasionally ventures into aquarium-friendly depths.

Ogre Catfish

Ogre Catfish

Fish

Asterophysus batrachus

A gulper catfish that can swallow prey nearly twice its own size.

Okinawa Goby

Okinawa Goby

Fish

Gobiodon okinawae

Tiny, vivid, and inseparable from its Acropora home.

Olga

Olga

Fish

Corydoras simulatus

A rarely documented Colombian cory with a color pattern that keeps even experts guessing.