Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; demersal; amphidromous (Ref. 46888). Tropical; 22°C - 28°C (Ref. 13614)
Eastern Atlantic: St. Louis (Senegal) to the Cunene River (Angola) and from the islands of the Gulf of Guinea (Ref. 5299, 57403, 79590). Also reported from the lower Kunene in Namibia (Ref. 33857).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 14.0 cm SL male/unsexed; (Ref. 79590)
Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 9 - 11. Diagnosis: snout 33-38% of head length; mouth with 2-3 rows of small, caniniform teeth; head length 24-31% of standard length; 2 fleshy processes on posterior of gill chamber, just inside gill opening; 35 or less cycloid predorsal scales, extending to vertical level of posterior part of preoperculum, predorsal scales may rarely be absent; cheeks and operculum naked; body with strongly ctenoid scales, numbering 54-66 (usually 59 to 63) in longitudinal series (including usually 3-4 scales on caudal fin base); 13-20 scales in rearward transverse series; 16-21 scales around caudal peduncle; 1st dorsal fin: VI; second dorsal fin: I,10 (rarely 11); anal fin: I,9-11 (usually 10), opposed to 2nd dorsal fin; pectoral fins: 14-17; caudal fin: 17 segmented rays (11 to 13 of which are branched); pelvic fins oval; yellowish dorsally, with several (about 14) bands of brown spots over dorsum (Ref. 57403, 79590).
Amphidromous freshwater species (Ref. 92840). Often found in lower courses of rivers, ranging from freshwaters to brackish habitats (Ref. 57403, 79590), including brackish waters of intermittent streams during dry seasons (Ref. 5299), but may ascend far up rivers (Ref. 57403, 79590). Also found in flooded fields and marginal swamps along courses of streams and rivers (Ref. 5299). Not usually exceeding 139.8 mm SL, larger specimens may be misidentifications of A. bustamantei (Ref. 79590).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Harrison, I.J., P.J. Miller and F. Pezold, 2003. Gobiidae. p. 625-666 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57403)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Tools
Special reports
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 25.8 - 28, mean 27.5 °C (based on 170 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00370 - 0.01419), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.3 ±0.1 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
