Species
Browsing 1,508 species. Use the filters below to narrow down.
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.
Oranda Goldfish
FishCarassius auratus var. oranda
The velvet-capped fancy goldfish that rewards patient, attentive keeping.
Orange Chromide
FishEtroplus maculatus
The only cichlid native to India, with a fascinating cleaning-fish side hustle.
Orange Cup Coral
CoralBalanophyllia (Balanophyllia) elegans
A vivid cold-water coral that thrives in the shade where most corals fail.
Orange Cup Coral
CoralTubastraea columnata
A bold, non-photosynthetic coral that rewards patient target feeders with vivid blooms.
Orange Cup Coral
CoralTubastraea grandidentata
A non-photosynthetic branching coral that thrives in dim, current-swept reef spots.
Orange Encrusting Anemone
CoralEpizoanthus scotinus
A cold-water Pacific zoanthid that brings bold orange color to cooler reef tanks.
Orangefin Anemonefish
FishAmphiprion chrysopterus
A large, bold anemonefish from the wide Pacific with serious territorial attitude.
Orange-fin Barb
FishBarbus eutaenia
A sleek African barb from fast, rocky streams that rewards patient keepers.
Orangefin Tetra
FishBryconops affinis
A restless, fast-moving shoaler from the Guiana Shield's coastal streams.
Orangestriped Triggerfish
FishBalistapus undulatus
One of the reef's most aggressive personalities packed into a boldly patterned body.
Orange Sun Coral
CoralTubastraea megalostoma
A bold, non-photosynthetic coral that thrives in low light and rewards dedicated feeders.
Orange Sun Coral
CoralTubastraea ramosa
A brilliant non-photosynthetic branching coral that thrives in the dark.
Orange Tree Coral
CoralDendrophyllia ramea
A branching azooxanthellate coral that thrives in dim, current-swept Atlantic waters.
Orchid Dottyback
FishPseudochromis fridmani
A bold little Red Sea endemic that punches well above its weight.
Orinoco Eartheater
FishBiotodoma wavrini
A slender eartheater that thrives in groups and rewards patient, experienced keepers.
Ornate Bichir
FishPolypterus ornatipinnis
An ancient, armored predator that breathes air and prowls the night.
Ornate Paradisefish
FishMalpulutta kretseri
A rare Sri Lankan gem that deserves a species tank all to itself.
Ornate rainbowfish
FishRhadinocentrus ornatus
A tiny Australian rainbowfish from wild, tea-stained wallum streams.
Oscar
FishAstronotus ocellatus
The cichlid that recognizes your face and rearranges its own tank.
Otocinclus
FishOtocinclus vittatus
Tiny algae-grazing catfish that plasters itself to glass and plants alike.
Otocinclus Catfish (Tank-Bred)
FishOtocinclus macrospilus
The most commonly sold oto, fragile at first but rewarding once settled.
Otocinclus cocama
FishA tiny Peruvian algae grazer with bold, zebra-like blotches and a gentle disposition.
Oyapock Cory
FishCorydoras condiscipulus
A long-lived Oyapock armored catfish that breathes air and blinks its eyes.
Pacific Double-saddle Butterflyfish
FishChaetodon ulietensis
A boldly patterned butterflyfish that pairs for life in the wild.
Pacific Sea Fan
CoralPacifigorgia dampieri
A bold Pacific sea fan that rewards patient, experienced reef keepers with high flow.
Painted Frogfish
FishAntennarius pictus
A master of disguise that hunts with a built-in fishing rod.
Painted Sailfin Catfish
FishLeiarius pictus
A majestic sailfin catfish only suited to those with truly enormous tanks.
Palauan Riffle Goby
FishStiphodon pelewensis
A tiny riffle-dweller that vanishes into the sand when startled.
Palm Lettuce Coral
CoralPectinia paeonia
A sculptural reef coral that thrives where others struggle with murky water.
Palmqvist's Nothobranch
FishNothobranchius palmqvisti
A brilliantly colored killifish that lives fast in seasonal African pools.
Panamanian Eartheater
FishGeophagus crassilabris
A rare Panamanian cichlid with a reddish glow and fascinating sand-sifting habits.
Panda Barb
FishHaludaria melanampyx
A lively hill-stream barb from India's Western Ghats with a two-tone shimmer.
Panda Clownfish
FishAmphiprion polymnus
A boldly patterned clownfish with a preference for sandy, silty homes.
Panda Cory
FishCorydoras panda
The panda-patterned cory that's as personable as it is peaceful.