Classificatie / Namen
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Siluriformes (Catfishes) >
Anchariidae (Vaonas)
Etymology: Gogo: Gogo is the Malagasy word most commonly used to refer to members of Anchariidae; arcuatus: The specific epithet come from the Latin arcuatus, meaning bent like a bow, in reference to the concave shape of the dorsoposterior margin of the dorsal fin (Ref. 56142).
Environment: milieu / Klimaatzone / Diepte / distribution range
Ecologie
; zoet water demersaal. Tropical
Africa: Sandrananta River drainage in southeastern highlands of Madagascar (Ref. 56142).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 18.1 cm SL mannelijk / geslacht onbekend; (Ref. 56142)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 2; Dorsale zachte stralen (totaal) : 7; Anale stekels: 0; Anale zachte stralen: 12; Wervels: 43. Diagnosis: Gogo arcuatus is distinguished from other members of Anchariidae by the following unique characters: a larger eye, 17.7-18.0% of head length vs. 9.2-15.9%; mottled brownish-gray colouration vs. highly mottled dark gray and cream, solid purplish-gray or lead gray; and a concave dorsoposterior margin of the dorsal fin vs. straight (Ref. 56142). It can be further distinguished from G. brevibarbis in having unicuspid teeth vs. bicuspid (Ref. 56142).
Body shape (shape guide): fusiform / normal.
Gogo arcuatus is found in pools surrounded by large, exposed boulders from a clear, shallow, forested stretch of the river, where the substrate is very rocky and the current swift (Ref. 56142).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Ng, H.H. and J.S. Sparks, 2005. Revision of the endemic Malagasy catfish family Anchariidae (Teleostei: Siluriformes), with descriptions of a new genus and three new species. Ichthyol. Explor. Freshwat. 16(4):303-323. (Ref. 56142)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-1)
Gevaar voor de mens
Harmless
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5781 [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): 3.4 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
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