Description:This 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.,