Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Cypriniformes (Carps) >
Nemacheilidae (Brook loaches)
Etymology: Schistura: Greek, schizein = to divide + Greek, oura = tail; an allusion to forked caudal fins (Ref. 45335); sexnubes: The specific name sexnubes is Latin meaning ‘six clouds’, in reference to the color pattern of six saddle blotches, like clouds hanging down the sky. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal; pH range: 5.4 - ?. Tropical; 21°C - ? (Ref. 94768)
Asia: Xiaoheijiang River subbasin, Mekong basin in Yunnan, China.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.8 cm SL male/unsexed; (Ref. 94768)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 12; Anal soft rays: 8. This species can be easily distinguished by the following combination of characters: caudal fin with 8+8 branched rays; incomplete lateral line; a dissociated caudal bar, a shallow caudal-peduncle depth (7.6%?9.6% SL; respectively caudal-peduncle 1.76?1.95 times longer than deep); and no sexual dimorphism. A dorsocephalic pattern consisting of a black, forward directed V-shaped formation located between the nares, and a white, ovoid blotch on the upper operculum represents an autapomorphy (Ref. 94768).
Occurs among rocks along the shallow shores in a water depth of 10-40 cm with moderate to fast current in Mengmenghe River. Syntopic with Schistura cryptofasciata , Glyptothorax laosensis and Clarias sp.. Found also in Nanzhaihe River, characterized by water flow velocity of 0.5 m/s, 21 °C water temperature, and a pH of 5.4 (Ref. 94768).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Endruweit, M., 2014. Schistura sexnubes, a new dimunitive river loach from the upper Mekong basin, Yunnan Province, China (Teleostei: Cypriniformes: Nemacheilidae). Zool. Res. 35(1):59-66. (Ref. 94768)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00310 - 0.01545), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
