Species
Browsing 3,374 species. Use the filters below to narrow down.
Knobby Candelabra
CoralEunicea tourneforti
A branching Caribbean gorgonian with bold, bumpy texture and dramatic candelabra form.
Knobby Candelabrum
CoralEunicea calyculata
A branching sea rod with distinctive knobbly texture, straight from Caribbean reefs.
Knob Coral
CoralAstraeosmilia maxima
A bold, knobby coral from the Indo-Pacific suited to intermediate reef keepers.
Knob Coral
CoralDipsastraea danai
A bottom-dwelling Pacific coral that rewards patient, intermediate-level reef keepers.
Knob Coral
CoralDipsastraea helianthoides
A boldly textured brain-style coral with a forgiving personality for growing reef tanks.
Knob Coral
CoralDipsastraea lacuna
A solid, knobby brain coral that rewards patient, steady reef keepers.
Knob Coral
CoralDipsastraea laxa
A rugged Indo-Pacific reef builder with distinctive raised corallites and broad geographic range.
Knob Coral
CoralDipsastraea lizardensis
A tough, knobby reef builder from the broad Indo-Pacific.
Knob Coral
CoralDipsastraea maritima
A rugged, knobby reef builder that rewards patient intermediate keepers.
Knob Coral
CoralDipsastraea marshae
A hardy Indo-Pacific reef builder with distinctive raised coral knobs.
Knob Coral
CoralDipsastraea matthaii
A solid, dependable large polyp stony coral for the intermediate reef keeper.
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
CoralDipsastraea vietnamensis
A hardy plocoid coral with bold, raised corallites that give it real texture.
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.
Knob Coral
CoralMussismilia leptophylla
A hardy Brazilian reef coral with a distinctively knobbed, sculptural form.
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
Korean Doty Barbel
FishHemibarbus mylodon
A hefty Korean river barb that rewards simple, spacious setups.
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.
Krieg's Mini Tetra
FishOdontostilbe kriegi
A small, peaceful South American schooler that thrives in the mid-water column.
Kubuna Hardyhead
FishCraterocephalus randi
A slender, active schooler from the clear streams of New Guinea.
Kuhli Loach
FishPangio kuhlii
The eel-like bottom dweller that disappears for weeks and reappears at midnight.