Shoal & Stem

Species Catalogue

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

fish
easy

Red Wagtail Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 5+·peaceful
fish
easy

Red-Tailed Rasbora

Rasbora borapetensis

fishfreshwater
2″·20+ gal·group 6+·peaceful
fish
easy

Redbreast Acara

Laetacara dorsigera

fishfreshwater
2.5″·20+ gal·peaceful
fish
easy

Redline Dwarf Rasbora

Microrasbora rubescens

fishfreshwater
1″·10+ gal·group 6+·peaceful
fish
easy

Redline Rasbora

Rasbora pauciperforata

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

Redtail Goodeid

Xenotoca eiseni

fishfreshwater
2.5″·20+ gal·group 6+·peaceful
fish
easy

Reticulatus Corydoras

Corydoras reticulatus

fishfreshwater
2″·15+ gal·group 6+·peaceful
plant
easy

Riccia

Riccia fluitans

plantfreshwater
Floating·Medium to high light·Fast growth
fish
easy

Ricefish

Oryzias woworae

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

Ricordea Florida

Ricordea florida

coralsaltwater
2″·30+ gal·peaceful
coral
easy

Ricordea Yuma

Ricordea yuma

coralsaltwater
2″·30+ gal·peaceful
shrimp
easy

Rili Red Sakura Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
shrimp
easy

Rili Shrimp

Neocaridina davidi var. Rili

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
plant
easy

Rosanervig Hygrophila

Hygrophila polysperma

plantfreshwater
Background·Medium–high light
plant
easy

Rose Sword

Echinodorus sp. 'Rose'

plantfreshwater
Midground·Moderate growth
fish
easy

Rosy Barb

Pethia conchonius

fishfreshwater
3.5″·25+ gal·group 6+·semi-aggr.
fish
easy

Rosy Loach

Petruichthys sp. rosy

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

Rosy Tetra

Hyphessobrycon rosaceus

fishfreshwater
2″·15+ gal·group 6+·peaceful
plant
easy

Rotala

Rotala sp.

plantfreshwater

A large genus of fast-growing stem plants widely used in aquascaping for their fine, needle-like to rounded leaves and tendency to display brilliant red, pink, and orange coloration under high light and CO2 injection. Rotala species are excellent nutrient consumers that help control algae, but most species require medium to high light and CO2 supplementation to achieve their best coloration and compact growth.

plant
easy

Rotala Indica

Rotala indica

plantfreshwater
Background·Medium light·Moderate growth
plant
easy

Rotala Nanjenshan

Rotala nanjenshan

plantfreshwater
Background·Low–High light·Fast growth
plant
easy

Rotala Sp. Green

Rotala sp. 'Green'

plantfreshwater
Background·Low–High light·Fast growth
plant
easy

Roundleaf Lindernia

Lindernia rotundifolia

plantfreshwater
Midground
fish
easy

Roundtail Paradisefish

Macropodus ocellatus

fishfreshwater
2.5″·10+ gal·semi-aggr.
fish
easy

Royal Gramma

Gramma loreto

fishsaltwater
3″·30+ gal·semi-aggr.
fish
easy

Rubber Lip Pleco

Chaetostoma milesi

fishfreshwater
5″·25+ gal·peaceful
snail
easy

Ruby Nerite Snail

Neritina variegata

snailfreshwater
0.75″·5+ gal·peaceful
fish
easy

Rusty Cichlid

Iodotropheus sprengerae

fishfreshwater
3.5″·20+ gal·peaceful
fish
easy

Ryukin Goldfish

Carassius auratus

fishfreshwater
8″·20+ gal·peaceful
plant
easy

Sagittaria Subulata

Sagittaria subulata

plantfreshwater
Low to high light·Fast growth
fish
easy

Sailfin Molly

Poecilia latipinna

fishfreshwater
4″·30+ gal·group 3+·peaceful
shrimp
easy

Sakura Red Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
shrimp
easy

Sakura Rili Shrimp

Neocaridina davidi

shrimpfreshwater
1.5″·5+ gal·group 10+·peaceful
shrimp
easy

Sakura Shrimp

Neocaridina davidi

shrimpfreshwater
1.2″·5+ gal·group 6+·peaceful
fish
easy

Salt & Pepper Platy

Xiphophorus maculatus

fishfreshwater
2.5″·10+ gal·group 3+·peaceful
plant
easy

Salvinia

Salvinia minima

plantfreshwater
Low to high light·Very growth