The genera Paralithoxus
has been reserected in a new paper (2018) by Lujan
et al. Paralithoxus can be diagnosed from
other members of Lithoxini by having at most low hemispherical
papillae around the oral disc margin (vs. digitate
papillae in Exastilithoxus), 14 (rarely 13)
branched caudal-fin rays (vs. 12 in Avalithoxus),
five branched anal-fin rays (vs. four in Avalithoxus
and Lithoxus), seven to nine interdorsal
plates (vs. five in Avalithoxus and Lithoxus),
and five rows of plates on the caudal peduncle (vs.
three in Avalithoxus and Lithoxus).
Similar to P.
from the same locations but P. pallidimaculatus
has more operecular odontodes and is lighter coloured.
Does not possess an adipose fin. Habitat:
Inhabits stony rivulets and has been collected in
little forest tributaries (3 to 4m wide) with shallow
depth, rocky bottom, strong current, often with cascades.
Likewise, during the dry season, it has been found
in a split brook with very little water input, where
only 2 species of Rivulus (R. igneus
and R. cladophorus were present, thus suggesting
that Paralithoxus is a pioneer species which
is capable of colonising difficult environments which
are nutritionally poor. Aquarium Care:
Quite a demanding genera which need pure, oxygen rich
water. They need plenty of hiding places and the aquarium
to be very strongly filtered. Diet:
Insectivores that feed in their natural habitat from
insect larvae on rocks. Feed Frozen mosquito larvae,
brine shrimp and Daphnia. They will also
except tablet foods. Etymology: The
specific species name for pallidimaculatus
refers to the bright spots on the body. Remarks:
Still found on some online sources as Lithoxus
L044, Planquette's rapids pleco.
Atlantic coastal drainages from Maroni to Kaw River
basins, French Guiana.Type
locality: Crique Boulenger, Comté
system, French Guyana.
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.
2021. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 06/2021 ). Le Bail, P.-Y., P. Keith and P. Planquette,
2000. Atlas des poissons d'eau douce de Guyane. Tome
2, Fascicule II: Siluriformes. Collection Patrimoines
Naturels 43(II): 307p. Paris: Publications scientifiques
du Muséum national d'Histoire naturelle. Lujan, NK; Armbruster, JW & Lovejoy, NR,
2018 "Multilocus phylogeny, diagnosis and generic
revision of the Guiana Shield endemic suckermouth
armored catfish tribe Lithoxini (Loricariidae: Hypostominae)"
(Zoological Journal of the Linnean Society, Vol. 20).
Seidel, I. 2008. Back to Nature guide
to L-catfishes, Ettlingen, Germany 208 p.