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Teleostei (teleosts) > Siluriformes (Catfishes) > Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); fontaneus: The specific epithet comes from the Latin adjective fontaneus, meaning of or from a spring, in reference to the nature of a type locality (a spring-fed stream)..

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic; pH range: 6.8 - ?; depth range 0 - 2 m (Ref. 80541). Tropical; 2°S - 3°S, 102°E - 103°E

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Asia: Indonesia. Presently known only from the type locality in the Batang Hari drainage in central Sumatra (Ref. 80541).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.4 cm SL male/unsexed; (Ref. 80541)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 1; Dorsal soft rays (total): 5; Anal spines: 3; Anal soft rays: 7; Vertebrae: 33. Akysis fontaneus is distinguished from congeners by a combination of the following characters: weakly emarginate caudal fin, convex dorsal surface of neurocranium making predorsal profile appear steeply sloping, presence of 4 large serrations on posterior edge of pectoral spine that are more than half width of spine, predorsal length 34.5% SL, pectoral-fin length 21.7% SL (not reaching pelvic-fin origin), length of adipose-fin base 18.7% SL and interorbital distance 42.3% HL (Ref. 80541).

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Main reference Upload your references | References | Coordinator | Collaborators

Ng, H.H., 2009. Akysis fontaneus, a new species of catfish (Siluriformes: Akysidae) from Sumatra. Zootaxa 1973:41-50. (Ref. 80541)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 22 October 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [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).

Trophic level (Ref. 69278): 3.2 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Akysis fontaneus Ng, 2009