IngliżDiagnosis: 16-50 gill rakers on first gill arch (much more reduced compared to Clarias gariepinus), subject to geographical variations (Ref. 57129). Head oval-shaped to rectangular in dorsal outline; snout broadly rounded; eyes rather lateral in position and, together with relatively broad head, make for a relatively large interorbital distance; number of gill rakers on first branchial arch subject to much variation, 16-40, rarely exceeding 40; dorsal fin base situated close to occipital process; dorsal fin always terminates before caudal fin base, distance between both small; anal fin originates closer to caudal fin base than to tip of snout, nearly reaching caudal fin but never confluent; pelvic fin base slightly closer to tip of snout than to caudal fin base, reaching base of first anal fin rays; pectoral fin extend from operculum to base of first dorsal fin rays; pectoral spine slightly curved and robust, serrated only on its outer side, number of serrations increases with increasing standard length; lateral line appears as a small, white line running from posterior end of head to middle of caudal fin base; openings of secondary sensory canals clearly marked, showing a regular pattern (Ref. 248).
Description: number of gill rakers on first gill arch is subject to geographical variations, i.e., from 16 (specimen of 62mm SL) to 27 (specimen of 541mm SL) in the Chad basin, from 18 (83mm SL) to 37 (309mm SL) in coastal basins of Togo, in the Volta, coastal basins of Côte d’Ivoire and Gambia, as well as in the River Senegal, up to 40 in Mauritania, and 50 in the artificial lakes Kossou (Côte d’Ivoire) and Nungua (Ghana)(Ref. 57129).
Coloration: 2 colour patterns can be discerned: the uniform and the marbled pattern (Ref. 248). In uniform pattern, specimens are uniform dark-brown, blackish brown or reddish brown on dorsal side and on flanks as well as on upper surface of paired fins, belly and lower surface of paired fins light brownish to beige (Ref. 248). In
Dehra traduzzjoni
Tradott mill-Ingliż minn BING
Din it-traduzzjoni hija purament indikattiva: minħabba l-kwalità limitata tat-test sors, id-deskrizzjonijiet morfoloġiċi huma disponibbli biss bl-Ingliż fil-verżjoni BETA tas-sistema. L-informazzjoni multilingwi se tkun disponibbli fil-ħarġiet futuri.
MaltiDjanjosi: 16-50 garġi rakers fuq l-ewwel garġi arch (ħafna iktar mnaqqsa meta mqabbla mal- Clarias gariepinus), bla ħsara għall-varjazzjonijiet ġeografiċi (Ref. 57129). Ras għamla ovali li rettangolari fil-qosor tad-dahar; geddum wiesgħa bix-xtur imneħħija; għajnejn pjuttost laterali fil-pożizzjoni u, flimkien mal-Kap relattivament wiesgħa, tagħmel għal distanza interorbitali sat relattivament kbar; in-numru tal-garġi rakers fuq l-ewwel branchial arch bla ħsara għall-varjazzjoni ħafna, 16-40, rari li teċċedi 40; gangliji ġwienaħ bażi li jinsab qrib il-proċess occipital; ġwienaħ gangliji dejjem jispiċċa qabel denb bażi, id-distanza bejn iż-żewġ żgħar; ġwienaħ Anal joriġina eqreb għall-denb bażi minn sal ponta tal-geddum, kważi jilħaq denb imma qatt konfluenti; huwa ġwienaħ jibbażaw ftit eqreb għall-ponta tal-geddum minn għal bażi denb, li jilħqu l-qiegħ ta ' l-ewwel raġġi ta ' anal tad-denb; ġwienaħ mhux jestendu minn operculum għal bażi ta ' l-ewwel gangliji ġwienaħ raġġi; ispina pettorali ftit mgħawġa u robusti, serrated biss fuq il-ġenb tiegħu fuq barra, in-numru ta ' serrations żidiet ma tiżdied tul standard; linja laterali jidher bħala linja żgħir, abjad li jibda mill-aħħar posterjuri ta ras nofs tad-denb bażi; il-fetħiet tal-kanali sensorja sekondarja immarkata b'mod ċar, li turi disinn regolari (Ref. 248).
Deskrizzjoni: in-numru tal-garġi rakers fuq l-ewwel garġi arch huwa suġġett għal varjazzjonijiet ġeografiċi, jiġifieri, mis-16 (kampjun ta ' 62 mm SL) sa 27 (kampjun tal-541 mm SL) fil-baċir ta ' ¬add, minn 18 (83 mm SL) sa 37 (309 mm SL) fil-ħwat kostali tal-Togo, fil-Volta, friskaturi tal-ħasil tal-kosta ta ' Cote d'Ivoire u l-Gambja, kif ukoll fis-Senegal tax-xmara , sa 40 fil-Mawritanja, u 50 fl-għadajjar artifiċjali Kossou (Cote d'Ivoire) u Nungua ()(Ref. 57129) tal-Ghana.
Kolorazzjoni: kulur 2 mudelli jistgħu jiġu discerned: l-uniformi u l-mudell marbled (Ref. 248). Fil-mudell uniformi, kampjuni huma kannella uniformi kannella dlam, iswed jew aħ
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