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Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
No image available for this species;
drawing shows typical fish in this Family.
Classification / Names
| Catalog of Fishes (
Actinopterygii (ray-finned fishes) >
Greek, schizein = to divide + Greek, oura = tail; an allusion to forked caudal fins (Ref.
Named for the famour Swiss biologist and humanist Alexandre Yersin who spends much of his life in southern Viet Nam, especially around Dalat where this species was collected.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: River Dong Nai and River Srepok in the mountains around Dalat, Vietnam.
Size / Weight / Age
range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref.
: 8. Differs from its congeners in Indochina by the combination of the following characters: wide median incision in upper lip; distance between anus and anal fin origin 2.6-3.8 eye diameter; pelvic fin clearly reaching beyond anus; caudal fin deeply emarginate; body with 7-11 dark bars, wider than interspaces, regularly shaped and set, meeting their homologues on back; black bar at caudal-fin base complete, reaching dorsal and ventral midlines (Ref.
Abundant in streams and rivers with gravel or rocky substrate and high water velocities (Ref.
). Resistant to organic pollution and can survive in streams that flow through villages and towns and exhibit strong signs of human perturbation (Ref.
). Most abundant in riffles and rapids with current velocities more than 1 m/s below the surface (Ref.
). Found in small high gradient rivers and small mountain streams, as well (Ref.
). Often associated with
Life cycle and mating behavior
Freyhof, J. and D.V. Serov
, 2001. Nemacheiline loaches from Central Vietnam with descriptions of a new genus and 14 new species (Cypriniformes: Balitoridae). Ichthyol. Explor. Freshwat. 12(2):133-191. (Ref.
IUCN Red List Status (Ref.
Data deficient (DD)
; Date assessed:
04 September 2010
Threat to humans
Stamps, Coins Misc.
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