White Cloud Mountain minnow
A small, hardy freshwater fish native to China, popular in aquariums for its cold tolerance and peaceful nature.
Native to Guangdong province in China, this small cypriniform fish is a staple of the global aquarium trade. It was once thought extinct but persists in farms and scattered wild populations, valued by hobbyists for its resilience and ease of breeding.
- Grows to approximately 4 cm in length with silver-green scales.
- Survives water temperatures down to 5 °C, ideal for cold climates.
- Native to Guangdong, China, with a rediscovered population on Hainan.
- Males display brighter colours and fan-shaped fins compared to females.
- Eggs hatch in 48 to 60 hours without parental cannibalism.
What it is
The White Cloud Mountain minnow is a tiny freshwater fish reaching about four centimetres in length. Its body displays a silver-green hue, contrasted by bright red dorsal and caudal fins. Domesticated varieties include golden, pink, and long-finned forms. Males exhibit slimmer bodies and fan-shaped fins, while females show a whiter, distended abdomen with triangular fins. Originally classified within the carp family, it now belongs to the distinct family Tanichthyidae.
Where it lives
This species originates from Guangdong province in southern China. Wild populations are critically rare due to pollution and tourism pressures near Guangzhou. A separate population was identified on Hainan Island decades after the original site appeared empty. The fish thrives in cool waters, surviving temperatures as low as five degrees Celsius, making it suitable for unheated tanks in colder regions.
How it lives
These fish are opportunistic omnivores that consume plant matter, insect larvae, shrimp, and occasionally scavenged organic material. They form shoals and feel most secure in groups of at least five individuals. Solitary fish may become timid and lose their vibrant colouring. They typically occupy the upper and middle water levels, avoiding the bottom, and coexist peacefully with other small species unless threatened by larger predators.
Breeding and life cycle
Breeding is straightforward for novices. Males display their fins to attract females, who lay eggs among spawning mops or dense vegetation like java moss. The parents do not typically eat the eggs, allowing them to remain in the tank. Eggs hatch within two to three days. Once the fry begin swimming freely, they can be fed finely powdered food or infusoria.
Fish and people
Widely available through the aquarium trade, these minnows are recommended for beginners due to their hardiness and tolerance for varying water conditions. Historically called the 'Poor Man's Neon Tetra' for their affordability, they serve as ideal starter fish. In ponds, they help control mosquito populations and may prey on frog eggs if tadpoles are present.
Status and threats
Wild populations face severe threats from environmental degradation and human activity in their native range. Although once believed extinct for over twenty years, limited wild stocks persist. Captive breeding has expanded availability, yet inbreeding in farm stock has produced genetically weak specimens prone to disease and deformities, raising concerns about long-term viability.
Questions people ask about White Cloud Mountain minnow
What temperature range does this fish require?
While wild populations prefer 18–22 °C, they survive down to 5 °C. This makes them suitable for unheated aquariums in cold regions, though they thrive best in cooler conditions than typical tropical setups.
Is it safe to keep with other fish?
Yes, they are peaceful and shoal in groups of five or more. Avoid housing them with large fish that might view them as prey, as their small size makes them vulnerable to predation.
How do I breed them successfully?
Provide a spawning mop or java moss for egg deposition. Males chase females to trigger spawning. Since parents rarely eat eggs, you can leave them in the tank until fry hatch in two to three days.
Why is it called the Poor Man's Neon Tetra?
During the 1940s and 1950s, this fish was much cheaper than neon tetras but offered similar visual appeal. The nickname reflected its accessibility to budget-conscious aquarists seeking colourful schooling fish.
Good reading and sources
- White Cloud Mountain minnow on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "White Cloud Mountain minnow", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.
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