Classificatie / Namen
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Siluriformes (Catfishes) >
Sisoridae (Sisorid catfishes) > Glyptosterninae
Etymology: Exostoma: Greek, exos = outside + Greek, stoma = mouth (Ref. 45335); effrenum: Name from Latin adjective 'effrenus', meaning unbridled; referring to to the condition of the adipose fin being distinctly separate from the upper principal caudal-fin rays.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
Asia: Thailand.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 6.5 cm SL mannelijk / geslacht onbekend; (Ref. 97386)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Distinguished from its congeners by the following characters: eye diameter 11.5-15.0% HL; head width 18.5-19.8% SL; body depth at anus 10.5-12.4% SL; length of adipose-fin base 25.8-29.0% SL; adipose fin distinctly separate from upper procurrent caudal-fin rays; caudal peduncle length 20.5-21.3% SL, depth 5.1-7.0% SL; caudal fin forked; preanal vertebrae 21-22 (Ref. 97386).
Body shape (shape guide): elongated; Cross section: flattened.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Ng, H.H. and C. Vidthayanon, 2014. A review of the glyptosternine catfish genus Exostoma Blyth 1860 from Thailand, with descriptions of two new species (Teleostei: Siluriformes). Zootaxa 3869(4):420-434. (Ref. 97386)
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 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00589 (0.00261 - 0.01327), 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 to moderate vulnerability (31 of 100). 🛈 |