Classificatie / Namen
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Siluriformes (Catfishes) >
Bagridae (Bagrid catfishes)
Etymology: Tachysurus: Greek, tachys, -eia, y = quick + Greek, oura = tail (Ref. 45335); gracilis: From the Latin gracilis, meaning slender, in reference to its elongated and thin body form.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water demersaal. Tropical
Asia: China.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 17.3 cm SL mannelijk / geslacht onbekend; (Ref. 56712)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 2; Dorsale zachte stralen (totaal) : 7; Anale zachte stralen: 17 - 21; Wervels: 47 - 48. Closely resembles Pseudobagrus adiposalis and P. ussuriensis, but differs in having a large elliptical eye (19.8-24.4% HL), a short maxillary barbel not reaching the posterior margin of the eye, a lightly serrated posterior edge on the second dorsal spine, a caudal fin slightly emarginate with upper lobe slightly longer than lower lobe, frontal concave with a smooth surface, and supraoccipital process short (far from the first basal bone of the dorsal spine) (Ref. 56712).
Body shape (shape guide): elongated.
Inhabits medium to large rivers in lowland areas with rocky substrate and moderate or far current (Ref. 56712).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Li, J., X. Chen and B.P.L. Chan, 2005. A new species of Pseudobagrus (Teleostei: Siluriformes: Bagridae) from southern China. Zootaxa 1067:49-57. (Ref. 56712)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01000 (0.00466 - 0.02144), b=2.92 (2.75 - 3.09), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.6 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low to moderate vulnerability (31 of 100). 🛈 |