species shows derived features such as a reduction
in size and number of teeth, premaxillary teeth absent,
a circular head shape, and eyes reduced in size without
iris operculum. Reproduction: Although
reproductive habits are unknown, this species is probably
a lip brooder. Sexual dimorphism includes hypertrophied
development of the lower lip suggesting that P.
laeviuscula is indeed a lip brooder. Aquarium
Care: This monotypic species is active during
the day. Prefers a sand substrate as most of this
type of Loricariinae do. A strong filtration is called
for in this species, regular water changes and also
a large aquarium as they can grow quite large. Diet:
Omnivore. A varied diet.
Brazil, Lower and middle Amazon basin, including Negro
and Branco rivers. Type locality:
Covain, Raphael; Fisch-Muller,
Sonia (2007). "The genera of the Neotropical
armored catfish subfamily Loricariinae (Siluriformes:
Loricariidae): a practical key and synopsis"
Zootaxa. 1462: 1–40. Evers, H.-G. & I.Seidel: Mergus,
Baensch Catfish Atlas Volume 1, 1st English edn.,