Shoal & Stem

Species Catalogue

1,444 species — care guides, community photos, water parameters, and tank-mate compatibility.

fish
hard

Uaru

Uaru amphiacanthoides

fishfreshwater
10″·75+ gal·peaceful
plant
medium

Umbrella Hairgrass

Eleocharis vivipara

plantfreshwater
Midground·Medium light·Moderate growth
fish
easy

Upside-Down Catfish

Synodontis nigriventris

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

Valentini Puffer

Canthigaster valentini

fishsaltwater
4″·40+ gal·semi-aggr.
plant
easy

Vallisneria Americana

Vallisneria americana

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

Vallisneria Caulescens

Vallisneria caulescens

plantfreshwater
Background·Moderate growth
plant
easy

Vallisneria Nana

Vallisneria nana

plantfreshwater
Low to medium light·Fast growth
plant
easy

Vallisneria Spiralis

Vallisneria spiralis

plantfreshwater
Background·Low to high light·Fast growth
plant
easy

Vallisneria Tortifolia

Vallisneria tortifolia

plantfreshwater
Background·Low–Medium light·Moderate growth
crab
medium

Vampire Crab

Geosesarma dennerle

crabfreshwater
0.75″·5+ gal·peaceful
fish
easy

Variatus Platy

Xiphophorus variatus

fishfreshwater
2.5″·10+ gal·peaceful
fish
medium

Veil Angelfish

Pterophyllum scalare

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

Veiltail Betta

Betta splendens

fishfreshwater
3″·5+ gal·semi-aggr.
fish
easy

Venezuelan Corydoras

Corydoras venezuelanus

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

Venustus Cichlid

Nimbochromis venustus

fishfreshwater
10″·75+ gal·aggressive
fish
medium

Viejita Dwarf Cichlid

Apistogramma viejita

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

Vietnamese Cardinal Minnow

Tanichthys micagemmae

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

Volitans Lionfish

Pterois volitans

fishsaltwater
15″·120+ gal·semi-aggr.
fish
easy

Wagtail Platy

Xiphophorus maculatus

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

Walker's Killifish

Fundulopanchax walkeri

fishfreshwater
1.5″·10+ gal·peaceful
plant
medium

Water Caltrop

Trapa natans

plantfreshwater
Floating·Moderate growth
plant
easy

Water Lettuce

Pistia stratiotes

plantfreshwater
High light·Fast growth
algae
hard

Water Net Algae

Hydrodictyon reticulatum

algaefreshwater

Remarkable bright green net-like colonies — a tessellated honeycomb of cells visible to the naked eye. Beautiful under a microscope but a serious nuisance in garden ponds. Thrives in warm, nutrient-rich water. Manual removal is the primary method as few animals eat it effectively.

plant
easy

Water Sprite

Ceratopteris thalictroides

plantfreshwater
Floating·Medium–High light·Fast growth
plant
hard

Water Violet

Hottonia palustris

plantfreshwater
Background
plant
expert

Waterwort

Elatine triandra

plantfreshwater
Carpet
plant
easy

Weeping Moss

Vesicularia ferriei

plantfreshwater
Epiphyte·Low to medium light·Slow growth
fish
medium

Weitzmani Corydoras

Corydoras weitzmani

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

Western Rainbowfish

Melanotaenia australis

fishfreshwater
4″·30+ gal·group 4+·peaceful
fish
easy

Whiptail Catfish

Rineloricaria lanceolata

fishfreshwater
5″·30+ gal·peaceful
shrimp
medium

Whisker Shrimp

Macrobrachium lanchesteri

shrimpfreshwater
8″·30+ gal·semi-aggr.
amphibian
medium

White Albino Axolotl

Ambystoma mexicanum

amphibianfreshwater
10″·20+ gal·peaceful
snail
medium

White Hercules Snail

Brotia herculea

snailfreshwater
2″·20+ gal·peaceful
fish
easy

White Medaka

Oryzias latipes

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

White Molly

Poecilia sphenops

fishfreshwater
3″·15+ gal·group 3+·peaceful
shrimp
medium

White Orchid Shrimp

Caridina spinata

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