White Cloud Mountain Minnow (Tanichthys albonubes)

Family: Cyprinidae

A hardy, peaceful cold-water minnow with red-tipped fins and an iridescent stripe — ideal for unheated planted tanks.

Care parameters

Water temperature
16–24 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
3–4 cm
Minimum tank
40 L
Water layer
Mid to upper; loose shoaler
Difficulty
Easy
Temperament
Peaceful; nippy only if crowded
Origin
Guangdong — Pearl River Delta

Species overview

Discovered in 1932 on Baiyun Mountain near Guangzhou, the white cloud minnow is one of the most forgiving aquarium fish ever kept. It thrives in cool, unheated tanks, tolerates a wide chemistry range, and breeds readily among fine-leaved plants. Males flare their red fins in display — a splash of living color that asks almost nothing in return.

Native biotope

Habitat
Cool mountain streams and pools
Flow
Gentle to moderate
Dissolved O₂
Appreciates clean, well-oxygenated water

Aquascape & hardware

Substrate
Dark fine gravel to set off the neon stripe
Hardscape
Smooth pebbles and driftwood from stream biotopes
Plants
Dense fine-leaved plants (hornwort, java moss) for cover

Temperament, diet & tankmates

Schooling
Shoal of 6+; larger groups color up
Diet
Omnivore; flakes, small live and frozen foods
Recommended tankmates
  • Zebra danio — Similar size and water needs
  • Corydoras — Peaceful bottom companion
  • Nerite snails — Ignored entirely
Avoid keeping with
  • Betta splendens — Fin nipping both ways
  • Large goldfish — Outcompeted at feeding
  • Aggressive barbs — Stressed by boisterous tankmates

Breeding & notes

Sexual dimorphism
Males are slimmer with brighter red fins; females are rounder and duller
Breeding method
Egg-scatterer. Spawns over fine plants at dawn; remove adults or the eggs will be eaten; fry hatch in 36–48 hours.

Frequently asked questions

Can White Cloud Mountain minnows live in an unheated tank?

Yes — they prefer it. They are a cool-water species happiest at 18–22 °C and tolerate a winter drop toward 15 °C. The real risk is summer heat above 25 °C, which shortens their lives.

How many should I keep together?

At least eight. They are a shoaling fish that relies on group confidence; in small numbers they hide, lose color and refuse to display.

Why did my fish lose its red fins?

Fading is usually a sign of stress: water that is too warm, too few companions, or poor water quality. Cooler, cleaner water and a bigger group restore color within days.

Are they good with shrimp?

Adults are safe with adult Neocaridina shrimp, though they will eat newborn fry and shrimplets. Dense moss gives the small ones refuge.

How long do they live?

Three to five years is typical with cool, clean water; poorly kept warm-water specimens often fade within eighteen months.