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Species

Browsing 807 species. Use the filters below to narrow down.

Blue Blubber Jellyfish

Blue Blubber Jellyfish

Invert

Catostylus mosaicus

Australia's most common jellyfish, surprisingly manageable in a dedicated kreisel tank.

Blue Botia

Blue Botia

Fish

Yasuhikotakia modesta

A sociable Mekong loach with vivid fins and a complex social life.

Blue Cheek Dwarf Cichlid

Blue Cheek Dwarf Cichlid

Fish

Apistogramma eunotus

A compact Peruvian dwarf cichlid with serious parenting instincts and big personality.

Blue Chromis

Blue Chromis

Fish

Chromis cyaneus

A cool-blue schooling fish that brings open-water energy to reef tanks.

Blue Diamond Characin

Blue Diamond Characin

Fish

Alestopetersius smykalai

A rare West African schooler with a bold diamond marking and fascinating male rivalry displays.

Blue Emperor Tetra

Blue Emperor Tetra

Fish

Inpaichthys kerri

Tiny tetra with big color rivalry. Males glow brightest when competing for attention.

Blue-eyed Catfish

Blue-eyed Catfish

Fish

Amblydoras nauticus

A hardy little catfish that talks in the dark and rarely shows its face by day.

Bluefin Notho

Bluefin Notho

Fish

Nothobranchius rachovii

A fish that lives fast, dies young, and leaves spectacular eggs behind.

Blue Flasher-wrasse

Blue Flasher-wrasse

Fish

Paracheilinus cyaneus

A reef-dwelling wrasse that sleeps wrapped in its own slime cocoon every night.

Bluehead Wrasse

Bluehead Wrasse

Fish

Thalassoma amblycephalum

A reef-dwelling wrasse with bold color phases and a peaceful community nature.

Blue Jaw Triggerfish

Blue Jaw Triggerfish

Fish

Xanthichthys auromarginatus

A long-lived, manageable trigger that actually leaves your rockwork alone.

Blue Killi

Blue Killi

Fish

Fundulopanchax filamentosus

Ornate West African killifish with flowing fins and a taste for live food.

Blue Kumu

Blue Kumu

Fish

Parupeneus cyclostomus

A reef-flat hunter that uses whisker-like barbels to sniff out hidden prey.

Blue-lined Rasbora

Blue-lined Rasbora

Fish

Trigonopoma gracile

A delicate blackwater rasbora with variable color forms from Borneo's forest streams.

Blueline rasbora

Blueline rasbora

Fish

Rasbora einthovenii

A peaceful forest-stream rasbora with a charmingly crinkled lateral stripe.

Blue Lyretail

Blue Lyretail

Fish

Fundulopanchax gardneri gardneri

A hardy, colorful killifish that's genuinely beginner-friendly and easy to breed.

Blue Neon Cichlid

Blue Neon Cichlid

Fish

Paracyprichromis nigripinnis

A peaceful Tanganyikan schooler that hangs vertically against rock walls to spawn.

Blue Neon Sheatfish

Blue Neon Sheatfish

Fish

Kryptopterus apogon

A massive river predator sometimes sold to unsuspecting buyers as a cute juvenile.

Blue Notho

Blue Notho

Fish

Nothobranchius patrizii

A tiny annual killifish built for life in pools that disappear.

Blue Perch

Blue Perch

Fish

Badis badis

A color-changing micro-predator that hides, watches, and ambushes with surprising intensity.

Blue-scaled Fairy Wrasse

Blue-scaled Fairy Wrasse

Fish

Cirrhilabrus cyanopleura

A roving reef wrasse that brings shimmering blue flanks to the open water column.

Bluespot Rockcod

Bluespot Rockcod

Fish

Cephalopholis miniata

A brilliantly spotted reef predator that commands attention in any large display tank.

Bluespotted Lagoon Ray

Bluespotted Lagoon Ray

Fish

Taeniura lymma

A reef ray that looks incredible but rarely thrives in captivity.

Blue-spotted Mudskipper

Blue-spotted Mudskipper

Fish

Boleophthalmus boddarti

A fish that walks on mud and breathes air at the tide's edge.

Bluestripe Pipefish

Bluestripe Pipefish

Fish

Doryrhamphus excisus

A secretive reef pipefish that pairs for life and fits in tight crevices.

Blue-throat Trigger

Blue-throat Trigger

Fish

Xanthichthys mento

A rare triggerfish that schools in the wild and stays manageable in a reef setup.

Blue Velvet Headshield Slug

Blue Velvet Headshield Slug

Invert

Chelidonura varians

A velvety reef predator that hunts flatworms with surprising efficiency.

Boldingh's Ghostgoby

Boldingh's Ghostgoby

Fish

Pleurosicya boldinghi

A tiny, transparent goby that spends its whole life clinging to soft corals.

Bolivian Ram

Bolivian Ram

Fish

Mikrogeophagus altispinosus

The hardier, more forgiving cousin of the popular ram cichlid.

Borneo Loach

Borneo Loach

Fish

Pangio shelfordii

A patterned eel-loach from Borneo's blackwater forests, with surprising personality for its size.

Brazilian Seahorse

Brazilian Seahorse

Fish

Hippocampus reidi

A slow-moving, sociable seahorse with a famously elongated snout built for precision hunting.

Brichardi Cichlid

Brichardi Cichlid

Fish

Chalinochromis brichardi

A bold little rubble-dweller from Tanganyika's rocky shoreline.

Bridled Monocle Bream

Bridled Monocle Bream

Fish

Scolopsis bilineata

A reef carnivore whose juveniles pull off a clever blenny disguise.

Brown Julie

Brown Julie

Fish

Julidochromis dickfeldi

A rock-hugging Tanganyikan cichlid that pairs for life and guards its cave fiercely.

Brown Pencilfish

Brown Pencilfish

Fish

Nannostomus beckfordi

A hardy little pencilfish that actually forgives beginner mistakes.

Brown's Betta

Brown's Betta

Fish

Betta brownorum

A jewel of the peat swamps, with a glowing green flank spot unlike any other Betta.