Shoal & Stem

Species Catalogue

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

fish
easy

Horseman Corydoras

Corydoras eques

fishfreshwater
1.2″·20+ gal·group 4+·peaceful
fish
easy

Imitator Corydoras

Corydoras imitator

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

Indian Glassfish

Parambassis ranga

fishfreshwater
3″·15+ gal·group 5+·peaceful
fish
medium

Ivantsoff's Blue Eye

Pseudomugil ivantsoffi

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

Jack Dempsey

Rocio octofasciata

fishfreshwater
8″·55+ gal·aggressive
fish
hard

Jaguar Cichlid

Parachromis managuensis

fishfreshwater
16″·75+ gal·aggressive
fish
easy

Japan Blue Endler

Poecilia wingei

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

Jellybean Tetra

Ladigesia roloffi

fishfreshwater
1.2″·10+ gal·group 6+·peaceful
fish
easy

Jewel Cichlid

Hemichromis bimaculatus

fishfreshwater
6″·30+ gal·aggressive
fish
easy

Julii Cichlid

Julidochromis transcriptus

fishfreshwater
3″·30+ gal·semi-aggr.
fish
medium

Kenyi Cichlid

Maylandia lombardoi

fishfreshwater
5″·55+ gal·aggressive
fish
easy

Keyhole Cichlid

Cleithracara maronii

fishfreshwater
3.5″·20+ gal·peaceful
fish
medium

Kilombero Notho

Nothobranchius kilomberoensis

fishfreshwater
1.5″·5+ gal·semi-aggr.
fish
medium

Kingsley's Ctenopoma

Ctenopoma kingsleyae

fishfreshwater
2.5″·20+ gal·peaceful
fish
easy

Kissing Gourami

Helostoma temminckii

fishfreshwater
10″·55+ gal·semi-aggr.
fish
easy

Kitty Tetra

Hyphessobrycon heliacus

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

Knight Goby

Stigmatogobius sadanundio

fishfreshwater
3.5″·20+ gal·peaceful
fish
medium

Koi

Cyprinus rubrofuscus

fishfreshwater
24″·250+ gal·group 2+·peaceful
fish
medium

Koi Angelfish

Pterophyllum scalare

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

Koi Swordtail

Xiphophorus hellerii

fishfreshwater
4″·20+ gal·group 3+·peaceful
fish
easy

Kole Tang

Ctenochaetus strigosus

fishsaltwater
7″·75+ gal·semi-aggr.
fish
medium

Koran Angelfish

Pomacanthus semicirculatus

fishsaltwater
15″·180+ gal·semi-aggr.
fish
expert

Korthaus's Notho

Nothobranchius korthausae

fishfreshwater
1.6″·10+ gal·semi-aggr.
fish
easy

Kribensis

Pelvicachromis pulcher

fishfreshwater
4″·20+ gal·group 2+·semi-aggr.
fish
easy

Kuhli Loach

Pangio kuhlii

fishfreshwater
4″·20+ gal·group 3+·peaceful
fish
medium

L066 King Tiger Pleco

Hypancistrus sp. L066

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

L075 Para Pleco

Peckoltia sabaji

fishfreshwater
3.5″·20+ gal·peaceful
fish
hard

L081 Gold Nugget Pleco Medium Spot

Baryancistrus sp. L081

fishfreshwater
8″·75+ gal·peaceful
fish
medium

L104 Clown Peckoltia

Peckoltia sp. L104

fishfreshwater
3.5″·20+ gal·peaceful
fish
expert

L114 Leopard Cactus Pleco

Pseudacanthicus sp. L114

fishfreshwater
24″·150+ gal·semi-aggr.
fish
medium

L129 Colombian Zebra Pleco

Hypancistrus debilittera

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

L144 Lemon Bristlenose Pleco

Ancistrus sp. L144

fishfreshwater
3.5″·20+ gal·peaceful
fish
hard

L177 Gold Nugget Pleco

Baryancistrus sp. L177

fishfreshwater
9″·75+ gal·peaceful
fish
easy

L183 Starlight Bristlenose Pleco

Ancistrus dolichopterus

fishfreshwater
5″·40+ gal·peaceful
fish
medium

L191 Royal Farlowella

Sturisoma aureum

fishfreshwater
5.5″·40+ gal·peaceful
fish
hard

L236 White Line Tiger Pleco

Hypancistrus sp. L236

fishfreshwater
3.5″·20+ gal·peaceful