Diagnosed among congeners by the combination of the
following characters: absence of plates in most of
the ventral surface of pectoral girdle; snout tip
with elliptical naked area reaching posteriorly the
anteriormost pore of the infraorbital ramus of sensory
canal; dorsal-fin spinelet present; supraoccipital
and predorsal plates with smooth keels; five series
of lateral plates below the dorsal fin; median and
mid-ventral series of plates with well-developed keels.
The new species is distinguished from congeners that
inhabit the rivers draining the Serra do Mar in Rio
de Janeiro state by the partial plate coverage of
the ventral surface of the pectoral girdle and the
abdomen (vs. pectoral girdle and abdomen completely
covered by plates in Rineloricaria nigricauda,
R. steindachneri, and R. zawadzkii).
The new species shares the absence of plates on the
abdominal surface with other species from the Paraná,
Uruguay, and other Brazilian coastal river basins
E, et al). Habitat: From the Iguaçu, Magé, Saracuruna,
Guapiaçu, Macacu, Macaé, and Paraíba
do Sul River basins in southeastern Brazil based on
morphological and molecular data (Mejia
E, et al). Aquarium Care:
An easy species to keep with no excessive demands
on water parameters. Diet: Omnivore.
Vegetable food such as cucumber and other various
foods such as tablet, flake and frozen. Etymology:
The specific name “nudipectoris” is a
compound Latin word formed by the neutral noun pectus,
meaning breast, and the adjective nudus, meaning bare,
in the genitive declension.
From the Iguaçu, Magé, Saracuruna, Guapiaçu,
Macacu, Macaé, and Paraíba do Sul River
basins in southeastern Brazil.
Mejia E, Ferraro GA,
Buckup PA. A new species of Rineloricaria
(Siluriformes: Loricariidae) from coastal drainages
of Rio de Janeiro, southeastern Brazil. Neotrop Ichthyol.