Description:
Dorsal spines (total): 1; Anal spines: 0. Diagnosis:
gill slits not extending ventrally beyond pectoral-fin
insertions; post-orbital length at most 60% of snout
length; maxillary barbels broadly fringed, shorter
than head, unbranched and without tubercles, but with
a distinct narrow membrane basal half of their anterior
margins; outer mandibular barbels with few, simple
and rather short ramifications; branches of inner
mandibular barbels more numerous, subdivided and globose;
mandibular teeth strong and rather long, numbering
17-22; pectoral-fin spines finely denticulate, the
serrations being stronger on inner than on outer margin;
dorsal-fin spine anteriorly smooth; humeral process
deep, triangular, granulose and not keeled ventrally;
adipose fin very well developed and close to rayed
dorsal fin. Colouration: after preservation,
the colouration becomes entirely light beige, with
numerous small, dark specks. Live specimens: entirely
yellow, with a dense pattern of black specks covering
body and adipose fin; other, more widely spaced specks
on fins. This is a large species that should be housed
in large aquaria. Etymology: The
specific name vermiculatus: Latin for vermiculate
(with wavy lines and marks), referring to small black
vermiculations on a completely yellow body. Remarks:
The last thumbnail species could be S. vermiculatus
(juvenile) as it does come from the same location
in Mali.
Common
Name:
None
Synonyms:
Synodontis vermiculata
Family:
Mochokidae
Distribution:
Africa:
Niger River, in Mopti region (Mali) and Lake Kainji
(Nigeria). Type locality: Mopti,
riv. Niger (Mali).
Size:
34.5cm. (13¾ins)
Temp:
23-25°C (73-79°F)
p.H.
6.2-7.2.
IUCN
Red List
This
species is restricted to the Niger river basin in Mali
and Nigeria. Its extent of occurrence (EOO) is 193,518
km2. There are no known current threats to this hardy
species, so it is assessed as Least
Concern, (IUCN 2020).
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