Description:
This genus is closely related to Hypoptopoma
but has a single line of enlarged odontoded running
along the body just above the lateral line and the
posterior body and the caudal peduncle are flat, whereas
the genus Hypoptopoma has a circular section.
They also posses a narrower head than the species
of Hypoptopoma. Both genera have their eyes
high up on the head. There are at present (2010) three
species in this genera namely O.
carinata (Steindachner,
1879), O. acutirostris Miranda Ribeiro, 1951
and O.
wrightiana
Eigenmann & Eigenmann, 1889 which is the type
species. O. acutirostris is reported to be
more sensitive than the other two species in this
genera and it is also the smallest and the prettiest.
Can also be identified by the longer and narrower
head and different pattern in the body. Aquarium
Care: Same care as for Hypotopoma
with long leaved plants or bamboo stalks for them
to rest on. Diet: Algae, vegetables,
tablet foodsand small live and frozen
foods. Etymology: The specific name
acutirostris: acutus (L.), sharp or pointed;
rostris, Neo-Latin scientific adjective of rostrum
(L.), snout, referring to its pointed snout.
Remarks:
You will sometimes find the former name of O.
acutirostra in your search results.
South America:
Orinoco and Negro River basins. Type locality:
Paricachoeira, rio Taquié, afl. do Vaupes que
é afl. do Negro, Amazonas, Brazil.
Size:
5.0cm. (2ins)
Temp:
25-29°c (77-85°f.)
p.H.
6.0-7.5.
IUCN
Red List
Despite
the little information available on this species, it
has a wide range and no apparent threats. Therefore,
it is assessed as Least
Concern (LC), (IUCN 2023).
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