Rineloricaria zaina is distinguished from other
species of the genus by the following combination
of characters: the tip of the snout with a bare area
oval not extending posteriorly; dorsal crests and
head inconspicuous; abdomen completely covered by
5-6 small plates and uniform series, preceded by for
smaller boards and numerous in the waist shoulder
strap; preanal plate; pectoral fins reaching the first
third of the pelvis; pelvic beyond the anal fin origin;
dark range in the posterior margin of the caudal fin.
This species looks like R. jaraguensis by
abdomen covered with plates, but is easily this at
the lowest head size (22.4% vs. 25.9 -26.6 -24.8%
CP); differs from R. thrissoceps (also with
abdomen interorbital distance largely covered) ( -26.6
22.1% vs. 19.8% in CC); R. quadrensis, R.
felipponei, R. steindachneri and R.
henselli differ to R. zaina with the
same characteristics that R. anitae. Rineloricaria
zaina has the shape of the oval head rounded
vs. almost triangular format of R. microlepidogaster;
excluding the length of fins, differentiates this
species for the same features that R. anitae has.
Aquarium Care: As with all Rineloricaria
provide long leaved plants or bamboo stalks for them
to hang on to. Diet: Omnivore. Vegetable
food such as cucumber and other various foods such
as tablet, flake and frozen. Remarks:
More information in the referenced paper (Ghazzi,
Widely distributed from the confluence of the Rio
Canoas with the Rio Pelotas to the rio Ibicuí,
Rio Uruguay basin in Brazil.
2008. Nine new species of the genus Rineloricaria
(Siluriformes, Loricariidae) from Uruguay River, southern
Brazil. Iheringia, Ser. Zool. 98(1):100-122. Froese, R. and D. Pauly. Editors.
2011. FishBase. World Wide Web electronic publication.