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Home > Trigonostigma somphongsi the Siamese Dwarf Rasbora thought to be extinct

Trigonostigma somphongsi the Siamese Dwarf Rasbora thought to be extinct

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Siamese Dwarf Rasbora photo Frank Schäfer
 
 
Somphongs’s Rasbora is critically endangered according to the IUCN Red List of Endangered species. Trigonostigma somphongsi has be successfully imported in limited quantities.
 
The Siamese Dwarf Rasbora (Trigonostigma somphongsi, formerly Rasbora somphongsi) has been described scientifically in 1958 on the basis of specimens that were imported by the ornamental fish trade by the end of 1957 from Thailand. So the exact type locality was unknown from the beginning. In the original description nothing but "Thailand" was mentioned, later, in the more exact scientific description, Meinken wrote that they originate from "southern Menam (Thailand)".
 
In the past 20 years the species was thought to be extinct in the wild. In the entrance in the international Red List the author (C. Vidthayanon, 2013) names as area of distribution the basin of the Mae Khlong near Ratchaburi in central Thailand. The species could not be found there anymore due to habitat destruction. The only reason, why the species was considered as "critically endangered" and not as "extinct in the wild" was the fact that every now and then single specimens were spotted among mixed catches of other ornamental fish species. However, it was not known where these animals had been collected. It was clear: the species still exists! But nobody knew where…..
 
Now it was finally possible to rediscover the habitat of the fish in the wild again! And we were able now to import successfully a limited number! Of course collecting small fish in the wild has no influence on natural populations at all. In contrast: it was only due to the interest of enthusiastic hobbyists that the species could be re-discovered again. So conservation acts become possible only now. One can only hope that the authorities do not regulate the trade with live animals (which is completely senseless, as everybody knows, for the trade with live specimens is not a serious threat for wild populations of small fish at all), but hopefully protected areas will be build up. Here the fish should be allowed to be collected, but the nature in its whole would be protected.
 
Keeping the charming animals in the aquarium is completely undemanding. The fish become only 2-2.5 cm long. Like all the close relatives of the fish (eg the harlequin barbs Trigonostigma heteromorpha, T. espei, and T. hengeli) they spawn on the underside of broad plant leaves. T. somphongsi prefers to live in schools, but for spawning the pairs most often separate themselves from the conspecifics. The males even defend a small spawning territory for a short time. So-called V-tanks are ideally suited for the extensive breeding of this species. Here young fish can be usually separated on a regular basis.
 
The list of species of ornamental fish that have been discovered by hobbyists and the ornamental fish trade is much enriched by this charming fish. Hopefully it can be also placed on list of species finally saved from extinction, too. We hope that many hobbyists show interest in that fish and ask for it in the pet shops. This would maybe even make a commercial breeding possible, another important step for protection of the species.
 
For our customers: the fish have code 452888 on our stock list. Please note that we exclusively supply the wholesale trade.
 
Text: Frank Schäfer, photos: Aquarium Glaser
 
 

Rasbora for Sale Online

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5 STUNNING GALAXY RASBORA or CELESTIAL PEARL DANIO CPD
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10 STUNNING GALAXY RASBORA or CELESTIAL PEARL DANIO CPD
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5 CHILI RASBORA (Boraras brigittae)

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5 STUNNING EMERALD RASBORA
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10 Harlequin Rasbora "FREE SHIPPING"
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10 STUNNING EMERALD RASBORA
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Kubotai Neon Green Rasbora Live Freshwater Aquarium Fish

Kubotai Neon Green Rasbora Live Freshwater Aquarium Fish
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10 Harlequin Rasbora Large

10 Harlequin Rasbora Large
   $20.00
 
 
Siamese Dwarf Rasbora male photo Frank Schäfer
 
 
Siamese Dwarf Rasbora female photo Frank Schäfer
 

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