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Siluriformes (Catfishes) >
Sisoridae (Sisorid catfishes) > Glyptosterninae
Etymology: Exostoma: Greek, exos = outside + Greek, stoma = mouth (Ref. 45335); sawmteai: Named after Sawmtea (Vanalalmalsawma), field assistant to Lalramliana (Ref. 103394).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
Asia: known only from the type locality, Pharsih River, a tributary of Tuivai River (Barak River drainage) in Mizoram, northeast India (Ref. 103394).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 8.5 cm SL mannelijk / geslacht onbekend; (Ref. 103394)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 7; Anale zachte stralen: 7; Wervels: 38 - 39. Exostoma sawmteai differs markedly from the other species of the genus from Ganges-Brahmaputra basin in having the posterior end of the adipose fin adnate with (vs. separated by a distinct notch from) the dorsal procurrent caudal-fin rays; further differs from all congeners in having a unique combination of the following characters: snout length 48-55 % HL; eye diameter 8-11 % HL; pectoral-pelvic distance 28.6-32.8 % SL; body depth at anus 11.5-14.1 % SL; length of adipose-fin base 30.7-37.2 % SL; caudal-peduncle length 18.4-20.3 % SL; caudal-peduncle depth 10 .1-11. 7 % SL; lunate caudal fin; and 38-39 total vertebrae (Ref. 103394).
Body shape (shape guide): elongated; Cross section: oval.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Lalramliana, S. Lalronunga, Lalnuntluanga and H.H. Ng, 2015. Exostoma sawmteai, a new sisorid catfish from northeast India (Teleostei: Sisoridae). Ichthyol. Explor. Freshwat. 26(1):59-64. (Ref. 103394)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00269 - 0.01352), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.1 ±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 vulnerability (10 of 100).
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