Given the L-numbers of Squaliforma
sp. L290 and L291 (being the juvenile form) in the
German Datz publication of March 2001. Was originally
described as Hypostomus horridus by Rudolf
Kner in 1854, although it was transferred to the genus
Squaliforma (now considered invalid) after
the genus' designation by I. J. H. Isbrücker,
I. Seidel, J. Michels, E. Schraml, and A. Werner in
2001. In 2004, Jonathan W. Armbruster classified the
species within Hypostomus instead of Squaliforma.
In 2016, following a review of Isorineloricaria
and Aphanotorulus by C. Keith Ray and Armbruster
(both of Auburn University), the species was reclassified
as a member of Aphanotorulus, although FishBase
still lists the species as Squaliforma horrida.
This 2016 review also found three other former Squaliforma
species (S. biseriata, S. scopularia,
and S. virescens) to be synonymous with A.
horridus. Description: Mouth
with papillae and upper lips have protrusions.
Sexual Differences: Similar to the Hypostomus
genera but with the males having bristles on the odontodes
mainly on the posterier of the body during spawning
time. Aquarium Care: Relatively easy
to keep with higher temperatures and a fine sand substrate.
Diet: Not fussy and will eat most
prepared aquarium foods such as tablet, frozen and
L290, L291, Long Head Pleco
Hypostomus horridus, Squaliforma
Amazon River basin (Bolivia, Brazil, Colombia and
Peru). Type locality: Forte do Principe,
Rio Guaporé, Brazil.
All L-Numbers Datz
Special. www.datze.de Isbrucker, I., Seidel,
I., Michels, J., Schraml, E., & Werner, A.
(2001). Diagnose vierzehn neuer Gattungen der Familie
Loricariidae Rafinesque, 1815 (Teleostei, Ostariophysi).
Ray, C. K., & Armbruster, J. W.
(2016). The genera Isorineloricaria and Aphanotorulus
(Siluriformes: Loricariidae) with description of a
new species. Zootaxa, 4072(5), 501–539.