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Phalacronotus apogon (Bleeker, 1851)

Image contributors to this species:

Johnny Jensen's Photographic Library (2) Karl-Heinz Dau (1 Stamp) Jean-Francois Helias (3) Zhou Hang (1)

ScotCat Sources:

Other Sources:

Relevant Information:

Description: Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal soft rays: 75 - 91. No dorsal fin; greatly reduced barbels (equal to or smaller than eye diameter); a slender body. Body depth 5.7-7.0 times in SL; mandibular barbels smaller than eye diameter or absent. Vomerine teeth in angular band. Habitat: Occurs in large rivers with turbid waters, streams, canals and lakes. Reproduction: Spawns just prior to the rise in water levels and moves into the flooded riparian forests and probably out into the floodplains during high water levels. Young of the year are first seen in July and start to move back to the rivers in October, where they remain common until January. Diet: Feeds on pelagic fishes in midwater to upper depths. Etymology: The genus name Phalacronoyus: phalakrós, bare; notus, from nôtos, back, referring to absence of dorsal fin, i.e., bare-backed. The specific name apogon: Without a beard, (barbels).

Common Name:

None

Synonyms:

Silurus apogon, Kryptopterus apogon, Phalacronotus leptonema, Silurus leptonema, Micronema apogon

Family:

Siluridae

Distribution:

Asia: Mekong and Chao Phraya basins, Malay Peninsula, Sumatra and Borneo

Size:

70.0cm. (28ins)

Temp:

20-26°C (67-79°F)

p.H.

6.0-7.0.

IUCN Red List

Even though this is a species that is likely threatened due to overfishing in parts of its range, recent data indicates that is still sufficiently abundant over most of its range. As the population trend is suspected to be stable or declining at a rate that precludes it from a threatened category, Phalacronotus apogon is therefore assessed as Least Concern. It may be necessary to reassess this species once the effects of fisheries on the populations are better understood, and the taxonomic position of subpopulations require research, (IUCN 2019).

Reference:

Froese, R. and D. Pauly. Editors. 2008. FishBase.World Wide Web electronic publication. www.fishbase.org, version (03/2009).
Ng, H.H. 2019. Phalacronotus apogon. The IUCN Red List of Threatened Species 2019.
Roberts, T.R., 1989. The freshwater fishes of Western Borneo (Kalimantan Barat, Indonesia). Mem. Calif. Acad. Sci. 14:210 p.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.

Family: Siluridae Back to Ident-A-Cat Click on Thumbnails

Phalacronotus apogon

Phalacronotus apogon

Phalacronotus apogon
Stamp

Phalacronotus apogon

Phalacronotus apogon
Head view

Phalacronotus apogon

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