Species
Browsing 1,092 species. Use the filters below to narrow down.
Jumbo Cory
FishCorydoras multiradiatus
A large, long-snouted cory with a fascinating air-breathing trick up its sleeve.
Kabili Bumblebee Goby
FishBrachygobius kabiliensis
Tiny bumblebee-patterned goby from Borneo's mangroves, surprisingly manageable for new keepers.
Kamaka Rainbowfish
FishMelanotaenia kamaka
A vividly colored rainbowfish with the active personality to match its appearance.
Kane's cory
FishCorydoras kanei
A small, spotted cory from blackwater rivers that breathes air and charms beginners.
Karnataka Labeo
FishLabeo calbasu
A large, algae-grazing river fish best appreciated outside the home aquarium.
Keyhole Cichlid
FishCleithracara maronii
A gentle, shy cichlid whose camouflage trick is straight out of a nature documentary.
King Conch
InvertAliger gigas
A gentle giant of the seafloor, with one of the most iconic shells in the ocean.
Kissing Prochilodus
FishSemaprochilodus insignis
A migratory Amazon grazer that plays a surprising ecological role in the wild.
Knob Coral
CoralAstraeosmilia maxima
A bold, knobby coral from the Indo-Pacific suited to intermediate reef keepers.
Knobnose Whiptail Catfish
FishHemiodontichthys acipenserinus
The only catfish where dad carries the eggs on his lips.
Kole Tang
FishCtenochaetus strigosus
A Hawaiian reef cleaner that scrubs algae with its uniquely bristled teeth.
Kooli Barb
FishPuntius vittatus
A peaceful little barb from rice fields and streams, best kept in lively groups.
Korean Bitterling
FishAcheilognathus signifer
A Korean bitterling with one of the most bizarre spawning strategies in freshwater fish
Kotsovato
FishParetroplus kieneri
A peaceful Malagasy cichlid rarely seen outside specialist collections.
Kuhli Loach
FishPangio kuhlii
The eel-like bottom dweller that disappears for weeks and reappears at midnight.
Kuhli Loach
FishPangio cuneovirgata
A rare kuhli lookalike from blackwater peat swamps, seldom seen outside expert collections.
Kuhli Loach
FishPangio filinaris
A slender, plain-bodied eel loach from the forested streams of peninsular Malaysia.
Kuhli Loach
FishPangio malayana
A slender kuhli loach relative that travels incognito in mixed shipments
Kuhli Loach
FishPangio piperata
A speckled, secretive kuhli loach that turns up as a mystery in mixed shipments.
Kuiter's Wrasse
FishMacropharyngodon kuiteri
A boldly patterned reef wrasse that thrives in small, active groups.
Ladder Loach
FishBotia rostrata
A boldly barred loach with a complex social life and real personality.
Lake Inle Red-tailed Loach
FishPetruichthys brevis
A tiny loach from Myanmar's famous Inle Lake, best kept in groups.
Lake Kurumoi Rainbowfish
FishMelanotaenia parva
A rare mountain lake gem that puts on a show at feeding time.
Lake Kutubu Rainbowfish
FishMelanotaenia lacustris
A slow-developing rainbowfish whose true colors take patience to unlock.
Lake Tebera Rainbowfish
FishMelanotaenia herbertaxelrodi
A highland Papua New Guinea gem that rewards patient keepers with vivid color.
Lake Wanam Rainbowfish
FishGlossolepis wanamensis
A critically endangered rainbowfish from a single remote Papua New Guinea lake.
Lamarck's Angelfish
FishGenicanthus lamarck
A planktivorous angelfish with bold dimorphism and an unusually peaceful personality.
Lamarck's sheet coral
CoralAgaricia lamarcki
A low-light Caribbean plate coral with distinctive white star-shaped mouths.
Lambchop Rasbora
FishTrigonostigma espei
A copper-bodied schooler whose distinctive lambchop marking sets it apart from look-alikes.
Lambert's cory
FishCorydoras lamberti
A rare and enigmatic armored catfish from the Peruvian Amazon, best kept in groups.
Largescaled Rasbora
FishRasbora paucisqualis
A tiny forest stream rasbora from the Mekong, rarely seen outside scientific collections.
Latticed Butterflyfish
FishChaetodon rafflesii
A coral-dependent butterflyfish that reveals its mood through a mysterious dark spot.
Lattice Dwarf Cichlid
FishNannacara taenia
A quietly charming dwarf cichlid hiding some fascinating breeding behavior beneath plain looks.
Lavender Split-tooth Dorid
InvertHypselodoris bullocki
A jewel-toned sea slug that demands expert care and a peaceful tank.
Leafy Sea Dragon
FishPhycodurus eques
The leafy sea dragon looks more like drifting seaweed than a fish.
least crayfish
InvertCambarellus diminutus
North America's tiniest crayfish, perfectly sized for a nano setup.