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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); varius: The specific name is derived from the Latin varius (variable), in allusion to the highly variable number of serrae on the posterior edge of the pectoral spine.
More on authors: Ng & Kottelat.
Environment: milieu / climate zone / depth range / distribution range
Ecología
; agua dulce bentopelágico. Tropical
Distribución
Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri
Asia: Mekong basin.
Tamaño / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.0 cm SL macho / no sexado; (Ref. 30857)
Short description
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 5 - 6; Radios blandos anales: 8 - 10; Vértebra: 31 - 33. Distinguished from all its congeners by the following unique combination of characters: truncate caudal fin; length of caudal peduncle 16.1-19.8% SL; depth of caudal peduncle 6.5-9.3% SL; length of adipose-fin base 25.6-29.5% SL; interorbital distance 42-46% HL; eye diameter 13-20% HL; length of nasal barbel 44-66% HL; straight lateral margins of the head when viewed dorsally; and 0-5 serrae on the posterior edge of the pectoral spine (Ref. 30226).
Hides in decomposing vegetation in stream beds, where it apparently feeds on zooplankton and rotifers (Ref. 30226).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Ng, H.H. and M. Kottelat, 1998. The catfish genus Akysis Bleeker (Teleostei: Akysidae) in Indochina, with descriptions of six new species. J. Nat. Hist. 32:1057-1097. (Ref. 30226)
IUCN Red List Status (Ref. 130435: Version 2024-1)
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