Dorsal spines (total): 2; Dorsal soft rays (total):
7; Anal soft rays: 11 - 13. 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.
Base of supra-occipital process moderately wide. 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. Colouration:
bluish grey on the upper part, lightening progressively
towards belly which is white; distal rim of fins blackish.
Reproduction: Males practise buccal
incubation. Habitat: Found in large
rivers and their estuaries. Remarks:
The images depicted may or may not be this species.
latiscutatus, Tachysurus gigas
Ouémé and Volta rivers, and greater
part of the Niger River basin, including the Benue
River downstream Gauthiot Falls.
150.0cm.TL (5ft 0ins)
P.; Menezes, Naércio A.
(2007). "Systematics of the family Ariidae (Ostariophysi,
Siluriformes), with a redefinition of the genera"
Zootaxa 1416: 1–126. Schneider, W.,
1990. FAO species identification sheets for fishery
purposes. Field guide to the commercial marine resources
of the Gulf of Guinea. Prepared and published with
the support of the FAO Regional Office for Africa.
Rome: FAO. 268 p. Froese, R. and D. Pauly.
Editors. 2019. FishBase. World Wide Web electronic
publication. www.fishbase.org, ( 12/2019 ).