Description:
Anal spines: 0; Anal soft rays: 8 – 9; Vertebrae:
38 – 41. Diagnosis: tooth patches broad; 8-9
anal-fin rays; 0-4 gill-rakers on upper branch of
first arch; 3 unbranched ventral caudal- fin
rays; 38-41 vertebrae; caudal fin with prominent pale
basal crescent, even in adults; body typically grey;
grey flank pigment carried onto the lower lip, mental
barbels and, in adults, the underside of the head.Body and head moderately depressed; eyes
placed laterally; snout blunt; lips thick; lower jaw
prominent, particularly in juveniles; 16-18 abdominal
vertebrae; 22-24 caudal vertebrae; 20 caudal fin rays
(usual arrangement ii-7-8- iii; iii-6-8-iii
in some juveniles; ii-7-9-ii in one adult). Colouration:
head and body bicolored in shades of grey; dorsum
and flank well-marked with spots, most an eye diameter
or smaller, with similar spots scattered across
venter; dorsal surface of pectoral fin dusky in adults,
pelvic fin generally unmarked; underside of head (from
snout to level of pectoral fin) bears a distinct
scattering of dark grey pigment (matching dorsal pigment
in shade), lower lip and barbels similarly marked;
pigmentation of ventral surface of head well- developed
in young and adults and starts forming at about 70-80mm
SL; anal fin with faint dusky bar near its distal
margin in young and juveniles, which is not apparent
in larger specimens in which the anal fin is generally
unpigmented and may bear scattered small spots or
a slight shading of grey pigment; caudal fin in adults
roughly the same shade as flank, with a pale distal
margin and a faint pale basal crescent; caudal fin
in young and juveniles with a dark bar set off by
the pale distal margin and a wide, pale basal crescent;
caudal saddle and bar pattern well-developed in specimens
up to about 70mm SL; caudal bar dark and mostly on
the caudal peduncle; saddle extending about 3/4 of
the way down the flank, generally not as dark nor
as well-defined as the caudal bar. Etymology:
The name is derived from the Latin barbatus,
meaning bearded. This is in reference to the dusky
underside of the head typical of this species.
Common
Name:
Liberian Electric Catfish
Synonyms:
Silurus electricus
Family:
Malapteruridae
Distribution:
Africa: From
the Kolente River (Sierra Leone/Guinea) to the Borlor
River (Liberia).
Size:
21.5cm. (8½ins)
Temp:
23-30°C (73-87°F)
p.H.
6.5-7.2.
IUCN
Red List
This
species is known from the Kolenté River in Guinea
and Sierra Leone to the Borlor River in Liberia. It
has an extent of occurrence (EOO) of 130,560 km2 and
an area of occupancy (AOO) of around 6,620 km2. Although
there are no known major widespread threats, it habitat
extent and quality is threatened by mining, urbanisation
and deforestation in Sierra Leone and Liberia. This
species is assessed as Least
Concern (IUCN 2020).
Reference:
Diallo, I.
2020. Malapterurus barbatus. The IUCN Red
List of Threatened Species 2020.
Norris, S.M., 2002. A revision of the African
electric catfishes, family Malapteruridae (Teleostei,
Siluriformes), with erection of a new genus and descriptions
of fourteen new species, and an annotated bibliography.
Ann. Mus. R. Afr. Centr., Sci. Zool., 289:155 p.
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