Distinguished from most loricariines by total absence
of abdominal plates, including the preanal plate.
Members of Hartiella and a few species of
Harttia also have the abdomen completely
devoid of plates, and can be separated from species
of Ixinandria by having 12 branched caudal-fin
rays (vs. 10 in Ixinandria) and by the absence
of postorbital notch, which is present in members
of Ixinandria. Members of Crossoloricaria,
Spatuloricaria, and Loricaria sometimes
lack a preanal plate, but have small abdominal plates.
Some species of Rineloricaria have a naked
abdomen, but a preanal plate is always present, except
can be diagnosed from other loricariines by the shapes
and number of premaxillary teeth. Ixinandria
possesses wide and almost symmetrical tooth cusps,
and up to 18 teeth in each premaxilla (vs. premaxilla
with up to 13 narrow and clearly asymmetrical teeth
in other loricariines, except Rineloricaria aequalicuspis
which has up to 15 narrow teeth with nearly symmetrical
cusps, and some hartiini, which also have many asymmetrical
premaxillary teeth). Habitat: This
species is found in fast flowing waters between 15
and 65 cm depth, especially in places with filamentous
algae, in mountainous areas at altitudes ranging from
around 200 to 2900 meters above sea level. During
the day, it occurs in fast flowing and highly oxygenated
waters, with stony bottom, usually hiding under the
stones. 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:
On some online searches this species is still listed
as Ixinandria steinbachi which is now a synonym.
Catalog of Fishes has the current valid status of
R. steinbachi (2020).
Upper río Juramento basin, río Salado
drainage in Salta (Argentina), upper río Bermejo
in northwestern Argentina and southern Bolivia, and
upper río Pilcomayo in southern Bolivia. Type
locality: Salta, Argentina.
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, ( 08/2019 ). Rodriguez, M.S., C.A. Cramer, S.L. Bonatto
and R.E. Reis, 2008. Taxonomy of Ixinandria
Isbrücker & Nijssen (Loricariidae: Loricariinae)
based on morphological and molecular data. Neotrop.