Species
Browsing 2,796 species. Use the filters below to narrow down.
Knob Coral
CoralDipsastraea pallida
A reef-building knob coral with wide Indo-Pacific roots and solid intermediate appeal.
Knob Coral
CoralDipsastraea rosaria
A solid, dependable large-polyp stony coral with bold texture and broad adaptability.
Knob Coral
CoralDipsastraea rotumana
A chunky, knobbed reef builder that rewards patient intermediate keepers.
Knob Coral
CoralDipsastraea speciosa
A chunky, knobbed reef-builder that rewards patient intermediate keepers.
Knob Coral
CoralDipsastraea truncata
A hardy Indo-Pacific brain coral with bold, knobby texture for reef displays.
Knob Coral
CoralDipsastraea veroni
A hardy Indo-Pacific reef builder with distinctive knobby colonies worth a closer look.
Knob Coral
CoralFavia gravida
A compact Atlantic coral with tidy, rounded corallites and a warm pale orange hue.
Knob Coral
CoralFavites rotundata
A hardy Indo-Pacific brain coral with distinctively rounded, knobby corallites.
Knob Coral
CoralGoniastrea stelligera
A compact, textured Red Sea coral with a neat, knobby surface pattern.
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.
Koran Angelfish
FishPomacanthus semicirculatus
A bold reef showpiece whose juvenile and adult forms look like completely different fish.
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.
Krabi Mouth Brooding Betta
FishBetta simplex
A rare mouth-brooding betta from Thailand's limestone streams, peaceful by betta standards.
Krauss' Basketmouth
FishCaquetaia kraussii
A predatory Colombian cichlid that lurks in swamps and ambushes its prey.
Kribensis
FishPelvicachromis pulcher
A beginner-friendly cichlid that breeds willingly and parents like a pro.
Kribensis
FishPelvicachromis subocellatus
A cave-spawning dwarf cichlid whose females put on a dazzling courtship display.
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.
Kumakuma
FishBrachyplatystoma filamentosum
One of the largest freshwater fish on Earth, and reportedly a danger to humans.
L200
FishBaryancistrus demantoides
A territorial Venezuelan pleco with vivid spots and a noticeably tall dorsal fin.
L239
FishBaryancistrus beggini
A tiny, dark-bodied pleco with an iridescent blue sheen from Guyana Shield rapids.
Lace Lettuce Coral
CoralLeptoseris cailleti
A deep-water Atlantic coral bringing unusual twisted fronds to low-light reef tanks.
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.