Shoal & Stem

Species Catalogue

709 species matching your filters — care guides, community photos, water parameters, and tank-mate compatibility.

fish
beginner

Black Neon Tetra

Hyphessobrycon herbertaxelrodi

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
fish
Mmedium

Black Paradisefish

Macropodus spechti

fishfreshwater
3.5″·20+ gal·semi-aggr.
fish
beginner

Black Phantom Tetra

Megalamphodus megalopterus

fishfreshwater
1.75″·15+ gal·group 6+·peaceful
fish
beginner

Black Sailfin Molly

Poecilia latipinna

fishfreshwater
4″·30+ gal·group 3+·peaceful
fish
beginner

Black Skirt Tetra

Gymnocorymbus ternetzi

fishfreshwater
2.5″·15+ gal·group 6+·peaceful
fish
beginner

Black Swordtail

Xiphophorus hellerii

fishfreshwater
4.5″·20+ gal·group 3+·peaceful
fish
Mmedium

Black-Winged Hatchetfish

Carnegiella marthae

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
fish
Mmedium

Blackfin Pearlfish

Austrolebias nigripinnis

fishfreshwater
1.5″·10+ gal·semi-aggr.
fish
beginner

Bleeding Heart Tetra

Hyphessobrycon erythrostigma

fishfreshwater
3″·20+ gal·group 6+·peaceful
fish
beginner

Blind Cave Tetra

Astyanax mexicanus

fishfreshwater
3.5″·20+ gal·group 6+·peaceful
fish
intermediate

Blood Parrot Cichlid

Amphilophus citrinellus × Vieja melanurus

fishfreshwater
8″·30+ gal·semi-aggr.
fish
beginner

Bloodfin Tetra

Aphyocharax anisitsi

fishfreshwater
2″·15+ gal·group 6+·peaceful
fish
beginner

Blue Assessor

Assessor macneilli

fishsaltwater
2.5″·20+ gal·peaceful
fish
intermediate

Blue Axelrodi Rasbora

Sundadanio axelrodi blue

fishfreshwater
1.2″·10+ gal·group 8+·peaceful
fish
advanced

Blue Diamond Discus

Symphysodon sp.

fishfreshwater
6″·55+ gal·group 4+·peaceful
fish
beginner

Blue Gourami

Trichopodus trichopterus

fishfreshwater
5″·20+ gal·semi-aggr.
fish
intermediate

Blue Gularis Killifish

Fundulopanchax sjoestedti

fishfreshwater
4″·20+ gal·semi-aggr.
fish
beginner

Blue Medaka

Oryzias latipes

fishfreshwater
1.5″·10+ gal·group 6+·peaceful
fish
intermediate

Blue Phantom Pleco

Hemiancistrus sp.

fishfreshwater
6″·40+ gal·semi-aggr.
fish
beginner

Blue Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 3+·peaceful
fish
beginner

Blue Star Endler

Poecilia wingei

fishfreshwater
1.2″·5+ gal·group 3+·peaceful
fish
intermediate

Blue Tang

Paracanthurus hepatus

fishsaltwater
12″·100+ gal·semi-aggr.
fish
beginner

Blue Wag Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 3+·peaceful
fish
beginner

Blue-throat Triggerfish

Xanthichthys auromarginatus

fishsaltwater
12″·75+ gal·semi-aggr.
fish
intermediate

Bluefin Notho

Nothobranchius rachovii

fishfreshwater
2.5″·10+ gal·group 2+·semi-aggr.
fish
intermediate

Blushing Angelfish

Pterophyllum scalare

fishfreshwater
6″·30+ gal·group 2+·semi-aggr.
fish
beginner

Boesemani Rainbowfish

Melanotaenia boesemani

fishfreshwater
4.5″·30+ gal·group 6+·peaceful
fish
beginner

Bolivian Ram

Mikrogeophagus altispinosus

fishfreshwater
3.5″·20+ gal·group 2+·peaceful
fish
intermediate

Borellii Dwarf Cichlid

Apistogramma borellii

fishfreshwater
2.5″·20+ gal·semi-aggr.
fish
intermediate

Borneo Sucker Loach

Gastromyzon punctulatus

fishfreshwater
2″·20+ gal·group 3+·peaceful
fish
beginner

Bristlenose Pleco

Ancistrus sp.

fishfreshwater
5″·20+ gal·peaceful
fish
beginner

Bronze Corydoras

Corydoras aeneus

fishfreshwater
2.75″·20+ gal·group 6+·peaceful
fish
Hhard

Bronze Featherback

Notopterus notopterus

fishfreshwater
12″·75+ gal·peaceful
fish
advanced

Brown Ghost Knifefish

Apteronotus leptorhynchus

fishfreshwater
8″·40+ gal·semi-aggr.
fish
Xexpert

Brunei Beauty

Betta macrostoma

fishfreshwater
4″·20+ gal·semi-aggr.
fish
intermediate

Bubble Eye Goldfish

Carassius auratus

fishfreshwater
5″·20+ gal·group 2+·peaceful