Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Nemacheilidae
Etymology: Schistura: Greek, schizein = to divide + Greek, oura = tail; an allusion to forked caudal fins (Ref. 45335); quaesita: From the Latin quaesitus (subtle, refined, delicate). More on author: Kottelat.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Asia: Nam Ngum basin, Laos.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.4 cm SL male/unsexed; (Ref. 43281)
Morphology | Morphometrics
Anterior nostril pierced on front side of a flap; processus dentiformis present; no median notch in upper lip, lower lip with median interruption; no median notch in lower jaw; caudal peduncle with elevated dorsal and ventral keels on posterior extremity, length 15.4 %SL, depth 9.4 %SL, 1.64 times in length; body depth 15.8 %SL; snout length 11.3 %SL, 49 % dorsal HL, eye diameter 5.5 %SL, 24 %HL; lateral line complete; anus about 1-2 eye diameters in front of anal-fin origin; 8.5 branched dorsal-fin rays; 5.5 branched anal-fin rays; caudal fin emarginate, with 9+8 branched rays; axillary pelvic lobe present; body with 8 broad bars, much wider than interspaces, except on caudal peduncle where interspaces are wider, irregularly shaped, the anterior ones not very distinct; 13 irregular black dots along lateral line, last one largest, immediately anterior to caudal-fin base; black bar at caudal-fin base complete but faint, except for conspicuous black vertically-elongate blotch occupying median half of fin base; dorsal-fin base with a small black blotch anteriorly, followed by a hyaline patch and a low faint grey elongate blotch (Ref. 36949).
Found in riffles and rapids (Ref. 36949).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00631 (0.00268 - 0.01487), 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.).
Vulnerability (Ref. 59153
): Low vulnerability (14 of 100) .