Mark Henry Sabaj
(1) Hudson Crizanto Gonçalves
Eight species of Hypostomus are known from
the Rio São Francisco basin and could possibly
occur in rivers draining into northeastern Brazilian
coastal drainages. These are H. alatus Castelnau,
1855, H. francisci (Lütken, 1874), H.
garmani (Regan, 1904), H. johnii (Steindachner,
1877), H. lima (Lütken, 1874), H.
macrops (Eigenmann & Eigenmann, 1888), H.
subcarinatus Castelnau, 1855, and H. vaillanti
(Steindachner, 1877). Most of those species were originally
described from the Rio das Velhas, a tributary to
the upper rio São Francisco, but they were
not recorded in coastal drainages of the Bahia State.
In fact, a detailed comparative study is necessary
to establish exactly which of these species occurs
in the portion of the Rio São Francisco draining
Bahia. In addition to the aforementioned species,
only H. scabriceps (Eigenmann & Eigenmann,
1888) is known to occur in nearby coastal drainages
(rio São Mateus, Espírito Santo State),
(Zanata et.al 2013). The Hypostomus genus
has 7 soft rays to the dorsal fin whereas the similar
looking Pterygoplichthys species have 10 soft
dorsal fin rays. Aquarium Care: As
with most of this genus, will do well in a larger
aquarium, although this is one of the smaller species
in the genera, and the aquarium well filtered. Water
parameters can be quite diverse for this genera. Diet:
Omnivore with a liking for green, tablet and frozen
Brazil, São Francisco River basin.. Type
locality: In rivulis flumini Rio da Velhas
affluentibus [as “Ribeirão do Mato”
og andre smaa Bifloder til Rio d. Velhas, in Lhtken,
1989. An atlas of freshwater and marine catfishes.
A preliminary survey of the Siluriformes. T.F.H. Publications,
Inc., Neptune City, New Jersey (USA). 784 p.
Ferraris, C.J. Jr., 2007. Checklist of catfishes,
recent and fossil (Osteichthyes: Siluriformes), and
catalogue of siluriform primary types. Zootaxa 1418:1-628. Froese, R. and D. Pauly. Editors.
2019. FishBase. World Wide Web electronic publication.
www.fishbase.org, version (25/01/2019). Zanata, Angela M., Sardeiro, Byanca, &
Zawadzki, Cláudio H.. (2013). A new
dark-dotted species of Hypostomus Lacépède
(Siluriformes: Loricariidae) from rio Paraguaçu,
Bahia State, Brazil. Neotropical Ichthyology, 11(2).