| Family: |
Ariidae (Sea catfishes), subfamily: Ariinae |
| Max. size: |
165 cm TL (male/unsexed); max.weight: 50 kg |
| Environment: |
benthopelagic; freshwater; brackish, |
| Distribution: |
Africa: Ouémé and Volta rivers, and greater part of the Niger River basin, including the Benue River downstream Gauthiot Falls (Ref. 57224) |
| Diagnosis: |
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 11-13. Diagnosis: body elongated and rounded; head broad and only slightly flattened above, snout rounded (slightly pointed in small specimens); mouth inferior; maxillary barbels just reaching to pectoral fin bases, mandibular ones being shorter; osseous head shield, fairly visible through the skin, coarsely rugose with a very slight median keel; occipital process moderately broad at base and truncated posteriorly (Ref. 57224). Base of supra-occipital process moderately wide (Ref. 2683). Predorsal plate rugose, crescent-shaped; premaxillary teeth villiform forming 2 plates meeting at midline; palatine teeth in 2 large subtriangular patches which are only slightly separated at midline; no gill-rakers on posterior face of the 1st and 2nd arches; total number of anterior gill-rakers on first arch 18 to 21, on second arch 18 to 20; dorsal and pectoral fins with a strong osseous, erectile spine with anterior rim granulose and posterior rim serrated; long dorsal fin spine preceded by a very short one; adipose fin well developed; caudal fin forked, upper lobe slightly elongated (Ref. 57224).
Coloration: bluish grey on the upper part, lightening progressively towards belly which is white; distal rim of fins blackish (Ref. 57224). |
| Biology: |
Found in large rivers and their estuaries (Ref. 2683). Probably exceeds 165 cm (Ref. 3876). Males practise buccal incubation (ref. 57224). |
| IUCN Red List Status: |
Data deficient (DD); Date assessed: 18 December 2019 Ref. (130435)
|
| Threat to humans: |
traumatogenic |
Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.
