A new genus has been erected,
Rhinotocinclus, (2022) with the type species
of Parotocinclus longirostris Garavello,
1988. Description: Rhinotocinclus
eppleyi is distinguished from R. acuen,
R. bockmanni, R. chromodontus, R.
dani, R. dinizae, R. hera,
R. jumaorum, R. pentakelis, R.
marginalis n. sp., and R. loxochelis
n. sp. by possessing an adipose fin (vs. adipose fin
absent), and by having a Y-shaped light mark from
the snout tip to each nostril (vs. light mark V-shaped
or present as two separate lines from snout tip diverging
to each nostril). It is distinguished from R.
collinsae, R. halbolthi, and R.
hardmanni by lacking accessory teeth on both
premaxilla and dentary (vs. accessory teeth present
); the odontodes on the ventral surface of first pelvic-fin
ray bent and pointing mesially (vs. odontodes aligned
with main ray axis ); a triangular dark spot on the
anterior portion of the dorsal-fin membrane (vs. dorsal-fin
spot absent); a Y-shaped light mark from snout tip
to nostrils (vs. Y-shaped light mark absent); and
a larger orbit, 26.7–31.4% snout length (vs.
orbit 18.9–24.6% snout length). Rhinotocinclus
eppleyi is distinguished from R. britskii
and R. kwarup, by having the snout more acutely
pointed (vs. snout more broadly rounded ); dark bars
on body wider and closer together (vs. dark bars on
body narrower and more widely spaced ); and 3–4
plates between the posterior border of the rostral
plate and the nostril (vs. one plate). Rhinotocinclus
eppleyi is distinguished from R. polyochrus,
R. variola, R. yaka, R. discolor
n. sp., R. isabelae n. sp., and R. pilosus
n. sp. by having 4–5 irregular series
of middle abdominal plates (vs. 0–2, rarely
3 irregular series); and five dark bars on body; vs.
four dark bars with bars 1+2 or 2+3 fused). It is
distinguished from R. longirostris by having fewer
premaxillary (22–30, mode 26) and dentary (21–27,
mode 25) teeth (Tabs. 1–2, vs. more numerous
premaxillary, 28–36, mode 30 and dentary, 27–31,
mode 30 teeth). Aquarium Care: I
would suggest a minimum size of 24” x 15”
X 12” for a small shoal of these catfish, with
plenty of hiding places amongst bogwood and plants.
I would suggest good quality aquarium sand such as
BD Aquarium Sand, or very smooth rounded gravel as
the preferred substrate when keeping these catfish.
The aquarium should provide some shelter in the form
of rocks or bogwood along with the inclusion of some
taller aquatic plants such as Vallis. 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.
Diet: Readily accepts a mixed and varied
diet which includes lettuce, cucumber, courgette (zucchini),
tablet foods, flake foods, granular foods, frozen
bloodworm, to name but a few. Try also to provide
rocks covered with algae or other methods like this
for this species as they will feed on this, and also
the very small microscopic animals that are found
amongst the algae. Etymology: Rhinotocinclus
masc., from the Greek ????s (Rhinos), beak, snout
and Otocinclus, a genus of Hypoptopomatinae,
in allusion to the conspicuous and elegant snout of
most of its species. Remarks:
Most online searches at the moment (2022) will still
give you the old genus name of Parotocinclus.
Upper and middle portions of the Rio Orinoco, Venezuela.
Type locality: Caño Curicurito,
ca. 1 km above its mouth into the Río Autana,
Amazonas, Venezuela, 4º47'N, 67º25'W.
Ferraris, C.J. Jr.,
2007. Checklist of catfishes, recent and fossil (Osteichthyes:
Siluriformes), and catalogue of siluriform primary
types. Zootaxa 1418:1-628. Konn-Vetterlein, Daniel: pers comm. Reis RE, Lehmann A. P. A new genus
of armored catfish (Siluriformes: Loricariidae) from
the Greater Amazon, with a review of the species and
description of five new species. Neotrop Ichthyol.
2022. Schaefer, S.A. and F.
The Guyana Shield Parotocinclus: systematic, biogeography,
and description of a new Venezuelan species (Siluroidei:
Loricariidae). Ichthyol. Explor. Freshwat. 4(1):39-56.