Similar to P. nicoi
but this species has white edging to the dorsal and
caudal fins. Colouration: Pseudolithoxus
kelsorum is diagnosed from all other Pseudolithoxus
by having dark brown to black base colour with eight
to 11 (usually nine) light yellowish vertical or oblique
(tilted dorsoanteriorly) transversal bands between
orbits and caudal fin, bands wide and rarely but sometimes
incomplete or contorted as swirls; vs. dark brown
to black base color with 18 or more thin, light yellow,
frequently contorted transversal bands between orbits
and caudal fin in P.
tigris, black base colour with small
white spots in P. anthrax and P. nicoi;
and light brown base colour with dark brown to black
spots in P. dumus. Description:
The genus Pseudolithoxus now includes six
P. kelsorum, P. nicoi, and
Previously described as the Lasiancistrus anthrax
group. They are characterized by evertible cheek plates,
a very dorsoventrally flattened body, extremely hypertrophied
odontodes (integumentary teeth) on elongated pectoral
spines and along the snout margin, and 3 rows of plates
on the caudal peduncle. In addition, it appears as
if females as well as males develop hypertrophied
snout and pectoral-fin odontodes, traits normally
restricted to nuptial males in other Loricariids.
Dorsal spines (total): 2; Dorsal soft rays (total):
7; Anal spines: 1; Anal soft rays: 5. Body and head
with numerous black bars. Lateral line plates 23-24;
dorsal plates 7-8; interdorsal plates 4-5; adipose-caudal
plates 7-8; folded dorsal fin plates 11-12; and postanal
plates 11-12. Aquarium Care: I would
suggest a minimum size of 48” x 18” X
18” for one or two of these catfish, with plenty
of hiding places amongst bogwood and plantsand the
ideal aquarium substrate to use would be aquarium
sand such as BD Aquarium Sand. As with all other species
of fish, water quality and general husbandry is very
important, and I would recommend that a minimum of
25% water is changed on a weekly basis. This fish
has similar requirements to other loricariids, so
should do well under normal aquarium conditions. Sexual
Differences: Females have a narrower head
with a larger body while males possess odontodes on
the edge of the snout, behind the gill cover and to
the pectoral fin spine. Diet: Omnivore:
vegetable and animal foods such as green foods, vegetable
tablets, live and frozen foods.
Venezuela, Amazonas State, Orinoco River drainage.
Known only from a single site on the Orinoco River
just above the Maipures rapids and approximately 60
km south of the Atures rapids.
Lujan, N.K. and J.N.O.
2011. A new distinctively banded species of Pseudolithoxus
(Siluriformes: Loricariidae) from the upper Orinoco
River. Zootaxa 2941:38-46. www.suedamerikafans.de Froese, R. and D. Pauly. Editors.
2018. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 02/2018 ).