Classificatie / Namen
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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Eponymy: Dr Michael Hardman (d: 1978) is a British ichthyologist and herpetologist at the Natural History Museum of Los Angeles County. [...] (Ref. 128868), visit book page.
Environment: milieu / Klimaatzone / Diepte / distribution range
Ecologie
; zoet water demersaal. Tropical
Asia: Chao Phraya River in Thailand.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 4.2 cm SL mannelijk / geslacht onbekend; (Ref. 55975)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 1; Wervels: 34 - 35. Distinguished from all congeners in having highly elevated supraoccipital spine and nuchal plate. Differs further from congeners in having a unique combination of the following characters: highly contrasting light brown patches on a chocolate brown body; lack of filamentous extensions to the first pectoral-fin element; presence of 5-6 serrations on the posterior edge of pectoral spine; eye diameter 6-9% of head length; branchiostegal membranes meeting at isthmus ventrally; outer mandibular barbels reaching middle of pectoral-fin base; and rounded tubercles on the tip of the snout and dorsal surface of neurocranium (Ref. 55975).
Body shape (shape guide): elongated.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628. (Ref. 58032)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Internetbronnen
Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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