The "WhiteCloud Mountain Minnow", "Tanichthys albonubes", was discovered on the WhiteCloud Mountain in Southern China by Tan, a Boy Scout leader in about 1930. The Generic name, Tanichthys, means 'Tan's fish' and the specific name, albonubes means 'White Cloud'.
Extinct in the Wild?
The
WhiteCloud Mountain Minnow is practically extinct in its native
habitat. It was believed to be extinct for some years, but an
apparently native population of this fish was discovered on Hainan
Island, well away from the WhiteCloud Mountain.
Water Conditions
This fish is very hardy. It will survive
in temperatures ranging from 4̊ C (39̊F) to 32̊ C (90̊ F) although the
extremes of this range are not recommended. It is more comfortable at
about 16-26 °C (60-72 °F). This is a lower temperature than some
tropical tanks although, like most 'cold water' fish it can be kept in
tropical aquariums, so it can be kept in either a tropical or an
unheated aquarium.
The fish prefer clean water, and will grow
and breed over a wide range of ph and hardness. I would avoid extremes
of pH or very hard water. Make sure all the Chlorine or Chloramine is
removed.
The WhiteCloud Mountain Minnow is intolerant of Copper
in the water, and great care needs to be exercised if Copper is used for
treatments.
Food
This fish is an omnivore and will
eat most things in the wild, and is easy to feed in an Aquarium, taking
normal fish foods readily. Be aware that it is a small fish. Do not overfeed.
Although the WhiteCloud Mountain Minnow is a small fish with a small mouth they
eat mosquito larvae, and benefit from some as a treat. They also like Daphnia.
Companions
The WhiteCloud Mountain Minnow is a schooling fish and will appear much happier in a group of at least six.
This
fish is usually a very peaceful one, growing to about 4 cm (1.5
inches). I have kept it successfully with a wide range of other small
fish including: Siamese Fighting Fish,
Guppies, Endlers Guppies, PristellaTetras, Rummy Nose Tetras,
Harlequin Rasboras, Scissortail Rasboras, Lemon Tetras, Black Widow
Tetras, Emperor Tetras, Head and Tail Light Tetras, Glass Bloodfin
Tetras, Swordtails, Platies, Mollies, Zebra Danios, Glowlight Tetras and Cherry Barbs as well as the Corydoras catfish like the Peppered Catfish.
I would be cautious about putting them with fish like Rosy Barbs,
Tiger Barbs, Paraguay Tetras, Buenos Aires Tetras and Colombian Tetras,
as these fish have been known to be more aggressive.
I
would avoid putting it with larger fish. I am often asked about keeping
White Clouds with Goldfish. I do not recommend it although I know of
plenty of people who have kept them successfully with small goldfish.
There is always some danger that the White Cloud might get swallowed.
Mosquito Control
Although the WhiteCloud Mountain
Minnow is not necessarily the best fish for
controlling mosquitoes, they are sometimes used for this in South
Australia because they do not eat frog eggs or tadpoles. This means
that they are one possible fish for frog ponds.
If these fish are used in this way, care needs to be excercised to prevent them escaping into the wild.
Varieties
Several
varieties of the extremely popular fish have been bred. These include
long finned types called by several different names, including the
Meteor Minnow, as well as so called 'gold' White Clouds.
Breeding
The White Cloud is one of the easiest egg laying fish to breed. When I was
a teenager I bred White Clouds through several Generations in a single
two foot Aquarium. Usually all that is necessary to breed a few is an aquarium with no other fish.
The Males are brighter in color than the females which become noticeable plumper than the males.
White
Clouds benefit from live plants, both for keeping and breeding. They
are an egg scatterer and usually drop their eggs over plants.
White
Clouds often do not eat all their fry, although they might eat some.
This is why it is possible to raise the babies with the parents. I have
observed no parental care in this species.
Male White Cloud Displaying
Photo was taken by Pseudogastromyzon.
Pest Fish
In
some areas this fish is considered a pest. If it is sold in your area,
I suggest you ask in the shop about any regulations. With
any fish, do not release them into the wild and do not keep them in
ponds that could overflow and allow the fish to escape into the wild.
Sources
I am grateful to the following sources of information: Phil of Aquarium Industries; personal communication, Threatened fishes of the world, That Fish Place, the Queensland Government and Aquatic Hobbyist.