As with most of this family
this species is very much a predator. Four species
have been described to the genus Cephalosilurus
resident in South America. Three of them have been
introduced for keeping in the aquarium, C.
nigricaudus and C.
fowleri. From their form they are
only little differences from each other. Their trademark
is the big head with the little eyes and short barbles
but with an almost head wide mouth. They are sluggish
animals which hardly move and only lie waiting for
prey. Habitat:Occurs in
pools and in the backwater of rapids and fast streams
with sand, rocks, and decaying wood on the bottom.
Found together with Bryconops caudomaculatus,
Characidium blennoides, Pimelodella cristata,
Leporinus friderici and Astyanax meunieri.
Update Dec. 2021:
(Shibatta, Oscar A. et al, Abstract) Lophiosilurus
is a monotypic genus represented by L. alexandri,
a species endemic to the São Francisco river
basin, Brazil. In previous phylogenetic analyses,
the genus has been recovered as the sister group of
Cephalosilurus. However, few species of Cephalosilurus
or few characters were included in those studies.
Thus, the current study aims to test the monophyletic
hypothesis of the genera Lophiosilurus and
Cephalosilurus with a more comprehensive
phylogenetic analysis, including all Cephalosilurus
species and a representative number of characters.
Phylogenetic analyses of 18 terminal taxa (15 ingroups
and three outgroups) were conducted based on a combined
75 character matrix, including 70 discrete morphological
characters concerning osteology and neuroanatomy,
four continuous characters, and the geometric morphometry
of the head. The monophyly of the family Pseudopimelodidae
was highly supported, and Cephalosilurus
is synonymized with Lophiosilurus.
The recovered phylogeny of the genus was (L. albomarginatus
, L. nigricaudus, L. apurensis, L. fowleri,
and L. alexandri). Remarks:
nigricaudus is still found on some
online searches as Cephalosilurus nigricaudus.
Upper Corantijn (Sipaliwini), Suriname and Marowijne
rivers, Suriname. Type Locality:
Sipaliwini River, Upper Corantijn River, Suriname
Ros, Wolfgang (2008):
Cephalosilurus nigricaudus und seine Abgrenzung zu
Cephalosilurus apurensis, "Aquaristik
Fachmaganzin & Aquarium heute"
Froese, R. and D. Pauly.
Editors. 2009. FishBase. World Wide Web electronic
publication. www.fishbase.org, version (05/2009).
Oscar A. Shibatta, Lucas R. Jarduli, Vitor
P. Abrahão & Lenice Souza-Shibatta.
(2021). Phylogeny of the Neotropical Pacman catfish
genus Lophiosilurus (Siluriformes: Pseudopimelodidae).
Neotrop. ichthyol., 19 (4).