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Species

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

Knobby Candelabra

Knobby Candelabra

Coral

Eunicea tourneforti

A branching Caribbean gorgonian with bold, bumpy texture and dramatic candelabra form.

Knobby Candelabrum

Knobby Candelabrum

Coral

Eunicea calyculata

A branching sea rod with distinctive knobbly texture, straight from Caribbean reefs.

Knob Coral

Knob Coral

Coral

Astraeosmilia maxima

A bold, knobby coral from the Indo-Pacific suited to intermediate reef keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea danai

A bottom-dwelling Pacific coral that rewards patient, intermediate-level reef keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea helianthoides

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

Knob Coral

Knob Coral

Coral

Dipsastraea lacuna

A solid, knobby brain coral that rewards patient, steady reef keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea laxa

A rugged Indo-Pacific reef builder with distinctive raised corallites and broad geographic range.

Knob Coral

Knob Coral

Coral

Dipsastraea lizardensis

A tough, knobby reef builder from the broad Indo-Pacific.

Knob Coral

Knob Coral

Coral

Dipsastraea maritima

A rugged, knobby reef builder that rewards patient intermediate keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea marshae

A hardy Indo-Pacific reef builder with distinctive raised coral knobs.

Knob Coral

Knob Coral

Coral

Dipsastraea matthaii

A solid, dependable large polyp stony coral for the intermediate reef keeper.

Knob Coral

Knob Coral

Coral

Dipsastraea pallida

A reef-building knob coral with wide Indo-Pacific roots and solid intermediate appeal.

Knob Coral

Knob Coral

Coral

Dipsastraea rosaria

A solid, dependable large-polyp stony coral with bold texture and broad adaptability.

Knob Coral

Knob Coral

Coral

Dipsastraea rotumana

A chunky, knobbed reef builder that rewards patient intermediate keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea speciosa

A chunky, knobbed reef-builder that rewards patient intermediate keepers.

Knob Coral

Knob Coral

Coral

Dipsastraea truncata

A hardy Indo-Pacific brain coral with bold, knobby texture for reef displays.

Knob Coral

Knob Coral

Coral

Dipsastraea veroni

A hardy Indo-Pacific reef builder with distinctive knobby colonies worth a closer look.

Knob Coral

Knob Coral

Coral

Dipsastraea vietnamensis

A hardy plocoid coral with bold, raised corallites that give it real texture.

Knob Coral

Knob Coral

Coral

Favia gravida

A compact Atlantic coral with tidy, rounded corallites and a warm pale orange hue.

Knob Coral

Knob Coral

Coral

Favites rotundata

A hardy Indo-Pacific brain coral with distinctively rounded, knobby corallites.

Knob Coral

Knob Coral

Coral

Goniastrea stelligera

A compact, textured Red Sea coral with a neat, knobby surface pattern.

Knob Coral

Knob Coral

Coral

Mussismilia leptophylla

A hardy Brazilian reef coral with a distinctively knobbed, sculptural form.

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

Korean Doty Barbel

Korean Doty Barbel

Fish

Hemibarbus mylodon

A hefty Korean river barb that rewards simple, spacious setups.

Kotsovato

Kotsovato

Fish

Paretroplus kieneri

A peaceful Malagasy cichlid rarely seen outside specialist collections.

Krabi Mouth Brooding Betta

Krabi Mouth Brooding Betta

Fish

Betta simplex

A rare mouth-brooding betta from Thailand's limestone streams, peaceful by betta standards.

Krauss' Basketmouth

Krauss' Basketmouth

Fish

Caquetaia kraussii

A predatory Colombian cichlid that lurks in swamps and ambushes its prey.

Kribensis

Kribensis

Fish

Pelvicachromis pulcher

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

Kribensis

Kribensis

Fish

Pelvicachromis subocellatus

A cave-spawning dwarf cichlid whose females put on a dazzling courtship display.

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.