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Species

Browsing 1,134 species. Use the filters below to narrow down.

Jerdon's carp

Jerdon's carp

Fish

Hypselobarbus jerdoni

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

Jewel Cichlid

Jewel Cichlid

Fish

Hemichromis bimaculatus

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

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.

Jumbo Cory

Jumbo Cory

Fish

Corydoras multiradiatus

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

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.

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.

King Angelfish

King Angelfish

Fish

Holacanthus passer

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

Knife Livebearer

Knife Livebearer

Fish

Alfaro cultratus

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

Knob Coral

Knob Coral

Coral

Dipsastraea helianthoides

A boldly textured brain-style coral with a forgiving personality for growing reef tanks.

Knobnose Whiptail Catfish

Knobnose Whiptail Catfish

Fish

Hemiodontichthys acipenserinus

The only catfish where dad carries the eggs on his lips.

Kole Tang

Kole Tang

Fish

Ctenochaetus strigosus

A Hawaiian reef cleaner that scrubs algae with its uniquely bristled teeth.

Kooli Barb

Kooli Barb

Fish

Puntius vittatus

A peaceful little barb from rice fields and streams, best kept in lively groups.

Koran Angelfish

Koran Angelfish

Fish

Pomacanthus semicirculatus

A bold reef showpiece whose juvenile and adult forms look like completely different fish.

Korean Bitterling

Korean Bitterling

Fish

Acheilognathus signifer

A Korean bitterling with one of the most bizarre spawning strategies in freshwater fish

Kotsovato

Kotsovato

Fish

Paretroplus kieneri

A peaceful Malagasy cichlid rarely seen outside specialist collections.

Kribensis

Kribensis

Fish

Pelvicachromis pulcher

A beginner-friendly cichlid that breeds willingly and parents like a pro.

Krieg's Mini Tetra

Krieg's Mini Tetra

Fish

Odontostilbe kriegi

A small, peaceful South American schooler that thrives in the mid-water column.

Kubuna Hardyhead

Kubuna Hardyhead

Fish

Craterocephalus randi

A slender, active schooler from the clear streams of New Guinea.

Kuhli Loach

Kuhli Loach

Fish

Pangio kuhlii

The eel-like bottom dweller that disappears for weeks and reappears at midnight.

Kumakuma

Kumakuma

Fish

Brachyplatystoma filamentosum

One of the largest freshwater fish on Earth, and reportedly a danger to humans.

Kyburz Tetra

Kyburz Tetra

Fish

Pseudochalceus kyburzi

A peaceful Colombian schooler with a nippy streak worth planning around.

L12

L12

Fish

Ancistomus feldbergae

A rock-dwelling Xingu pleco that grazes algae by night and hides by day.

L128

L128

Fish

Hemiancistrus sp

A spot-patterned Orinoco pleco with a taxonomic identity that's still up for debate.

L200

L200

Fish

Baryancistrus demantoides

A territorial Venezuelan pleco with vivid spots and a noticeably tall dorsal fin.

L260

L260

Fish

Hypancistrus sp. "L260"

A fine-patterned Tapajós pleco that breeds readily and stays compact.

Lacrimostigmata Cory

Lacrimostigmata Cory

Fish

Corydoras lacrimostigmata

A tiny armored catfish that may mimic its wild neighbors to blend in.

Ladder Loach

Ladder Loach

Fish

Botia rostrata

A boldly barred loach with a complex social life and real personality.

Lake Kurumoi Rainbowfish

Lake Kurumoi Rainbowfish

Fish

Melanotaenia parva

A rare mountain lake gem that puts on a show at feeding time.

Lake Kutubu Rainbowfish

Lake Kutubu Rainbowfish

Fish

Melanotaenia lacustris

A slow-developing rainbowfish whose true colors take patience to unlock.

Lake Tebera Rainbowfish

Lake Tebera Rainbowfish

Fish

Melanotaenia herbertaxelrodi

A highland Papua New Guinea gem that rewards patient keepers with vivid color.

Lake Wanam Rainbowfish

Lake Wanam Rainbowfish

Fish

Glossolepis wanamensis

A critically endangered rainbowfish from a single remote Papua New Guinea lake.

Lambchop Rasbora

Lambchop Rasbora

Fish

Trigonostigma espei

A copper-bodied schooler whose distinctive lambchop marking sets it apart from look-alikes.

Lambert's cory

Lambert's cory

Fish

Corydoras lamberti

A rare and enigmatic armored catfish from the Peruvian Amazon, best kept in groups.