Nannocharax parvus Pellegrin, 1906
Nannocharax parvus
photo by RMCA

Family:  Distichodontidae (Distichodus)
Max. size:  5.3 cm SL (male/unsexed)
Environment:  pelagic; freshwater; pH range: 6.5 - 7.5; dH range: 25,
Distribution:  Africa: occurs in the Ogowe to Chiloango Rivers (Ref. 81638). Also reported from the marine lower Congo River (Ref. 80507) in Democratic Republic of the Congo. Report from the Inkisi River probably based on a locality error (Ref. 88779).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 13-16; Anal spines: 0-0; Anal soft rays: 9-13. Diagnosis: anal fin with 2 unbranched and 7-11 branched rays; head and body with dark band along mid-lateral surface from snout to at least rear of caudal peduncle (Ref. 81638). Description: body moderately to distinctly elongate, depth 0.22-0.27x SL; mouth almost terminal; maxilla edentulous, premaxilla with 5 and dentary with 5-6 bicuspid teeth; scales ctenoid and moderately sized; lateral line mid-lateral, irregularly pored in smaller individuals, but complete in larger specimens with 36-40 scales; 4 scales between anal fin origin and lateral line; D: II-III,11-13 (Ref. 81638). Coloration: preserved specimens light to dark brown, darker dorsally; head with dark pigmentation that extends from snout and upper lip to anterior margin of orbit; opercle darker, more so dorsally; mid-lateral surface of body with dark, irregular vertical bars continuous ventrally with mid-lateral band; caudal fin with middle rays often darker than other rays, more so basally; dorsal and anal fins dusky; pectoral and pelvic fins with rays outlined by small, dark chromatophores (Ref. 81638).
Biology:  Maximum TL was recorded at 4.2 cm (Ref. 7094).
IUCN Red List Status: Least Concern (LC); Date assessed: 16 February 2009 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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