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Species

Browsing 3,374 species. Use the filters below to narrow down.

Jello Band Catfish

Jello Band Catfish

Fish

Aguarunichthys torosus

A powerfully built Peruvian catfish that treats smaller tankmates as a meal.

Jellybean Tetra

Jellybean Tetra

Fish

Lepidarchus adonis

A tiny, transparent West African gem that rewards patient, detail-oriented keepers.

Jelly Bean Tetra

Jelly Bean Tetra

Fish

Ladigesia roloffi

A tiny West African gem that thrives in groups and rewards patient keepers.

Jerdon's Baril

Jerdon's Baril

Fish

Barilius canarensis

A bold, fast-moving schooler from Indian hill streams that needs equally spirited tankmates.

Jerdon's carp

Jerdon's carp

Fish

Hypselobarbus jerdoni

A rare, river-schooling giant from the Western Ghats, seldom seen in the hobby.

Jewel Anemone

Jewel Anemone

Coral

Corynactis parvula

A jewel-toned colonial anemone that thrives in low-light reef corners.

Jewel Anemone

Jewel Anemone

Coral

Corynactis viridis

A not-quite-anemone that paints rocky walls in vivid clusters

Jewel Cichlid

Jewel Cichlid

Fish

Hemichromis bimaculatus

Gorgeous West African cichlid that becomes a ferocious defender once paired up.

Joker's Boomerang Coral

Joker's Boomerang Coral

Coral

Polyphyllia novaehiberniae

A free-roaming, boomerang-shaped coral that extends its tentacles even in daylight.

Jonklaas's Loach

Jonklaas's Loach

Fish

Lepidocephalichthys jonklaasi

A rare Sri Lankan loach hidden beneath leaf litter, seldom seen in the hobby.

Julii Cory

Julii Cory

Fish

Corydoras julii

A spotted little catfish that blinks, breathes air, and belongs in every peaceful community.

Julii Cory

Julii Cory

Fish

Corydoras trilineatus

Commonly sold as julii cory, this peaceful armored catfish is a beginner-friendly gem.

Jumbie Teta

Jumbie Teta

Fish

Ancistrus cf cirrhosus

The bristlenose catfish: a compact, algae-grazing workhorse with a face only a hobbyist could love.

Jumbo Cory

Jumbo Cory

Fish

Corydoras multiradiatus

A large, long-snouted cory with a fascinating air-breathing trick up its sleeve.

Jutai

Jutai

Fish

Apistogramma sp. "Kelleri"

A mouthbrooding dwarf cichlid with a remarkably flexible approach to raising its young.

Kabili Bumblebee Goby

Kabili Bumblebee Goby

Fish

Brachygobius kabiliensis

Tiny bumblebee-patterned goby from Borneo's mangroves, surprisingly manageable for new keepers.

Kamaka Rainbowfish

Kamaka Rainbowfish

Fish

Melanotaenia kamaka

A vividly colored rainbowfish with the active personality to match its appearance.

Kampango

Kampango

Fish

Bagrus meridionalis

A giant Lake Malawi catfish with one of the most complex social lives in freshwater.

Kane's cory

Kane's cory

Fish

Corydoras kanei

A small, spotted cory from blackwater rivers that breathes air and charms beginners.

Kapuas Betta

Kapuas Betta

Fish

Betta krataios

A tiny mouthbrooding betta from Borneo's blackwater streams, best kept in quiet company.

Karnataka Labeo

Karnataka Labeo

Fish

Labeo calbasu

A large, algae-grazing river fish best appreciated outside the home aquarium.

Katvis

Katvis

Fish

Pimelodus ornatus

A bold, predatory catfish with toxic spines and serious schooling instincts.

Kenyi Cichlid

Kenyi Cichlid

Fish

Pseudotropheus lombardoi

A notoriously aggressive mbuna with a dramatic reverse color scheme between sexes.

Keyhole angelfish

Keyhole angelfish

Fish

Centropyge tibicen

The biggest dwarf angel, dressed in bold black with a single white patch.

Keyhole Cichlid

Keyhole Cichlid

Fish

Cleithracara maronii

A gentle, shy cichlid whose camouflage trick is straight out of a nature documentary.

Killifish

Killifish

Fish

Austrolebias adloffi

A tiny annual killifish that races through its entire life cycle in months.

King Angelfish

King Angelfish

Fish

Holacanthus passer

A bold Eastern Pacific angel with a single dramatic white stripe across its flank.

King Conch

King Conch

Invert

Aliger gigas

A gentle giant of the seafloor, with one of the most iconic shells in the ocean.

Kissing Gourami

Kissing Gourami

Fish

Helostoma temminkii

The infamous 'kissing fish' hides a complicated personality behind its pucker.

Kissing Prochilodus

Kissing Prochilodus

Fish

Semaprochilodus insignis

A migratory Amazon grazer that plays a surprising ecological role in the wild.

Knife Livebearer

Knife Livebearer

Fish

Alfaro cultratus

A tough little livebearer with a blade-like keel and a feisty personality.

Knight's Snakehead

Knight's Snakehead

Fish

Channa pardalis

A leopard-patterned snakehead from India's misty Khasi Hills.

Knobbed Brain Coral

Knobbed Brain Coral

Coral

Pseudodiploria clivosa

A hardy Caribbean brain coral with distinctively ridged, knobby colonies.

Knobbed Zoanthidean

Knobbed Zoanthidean

Coral

Palythoa mammillosa

A hardy Atlantic zoanthid with a distinctively bumpy, textured colony surface.

Knobby Cactus Coral

Knobby Cactus Coral

Coral

Mycetophyllia aliciae

A hardy Caribbean plate coral with bold texture and an easygoing nature.

Knobby Candelabra

Knobby Candelabra

Coral

Eunicea clavigera

A branching Caribbean gorgonian with distinctive knobbly texture and candelabra growth.