can sometimes be seen, and sold as Opsodoras
stuebelii, which has
a longer snout and lacks the body spots and also grows
larger. It has been misidentified, especially in the
mid 1980s in the hobby when catfish were just beginning
to get a fan base in the U. K. It is also very like
has a spotted caudal fin against O. punctata
which has dark stripes.
Was known until
recently (2011) as Doras punctatus until
a new paper by Birindelli, JLO and MH Sabaj Pérez
(2011) asigned a new genera, Ossancora to
this species. Ossancora was proposed to include
three previously named species O. eigenmanni,
O. fimbriata plus one new species in O. asterophysa.
The four species are distinguished from each other
by the branching on the maxillary and mandibular barbels,
the morphologies of the swimbladder and bony plates
in front of the dorsal fin, and the number of teeth
on the upper and lower jaws.
This genus along
with Agamyxis and Acanthodoras can
create a sound by grating its fin bones in each socket
and amplifying the noise via the swim bladder. The
image below shows the extent of its barbels and why
it gots its common name of the "Feather Barbels
Catfish", In fact the mandibular barbels put
you in mind of the African catfish genus, Synodontis.
view of barbels
This is a catfish
that is mainly easy to maintain and is very active
but good water quality is important i.e. keeping up
water changes, as it will rarely thrive in poor water
conditions. A sand substrate with a mixture of driftwood
and plants will make this species feel secure in its
suroundings. The aquarium lighting should not be too
Amazon River and Paraná-Paraguay
The head is longer than the
width with the characteristic small mid-lateral scutes
of this genus, along the sides of the body.
Three pair of barbels with the
maxillary barbels long and feathered. The
bone coracoides is exposed and forms a closed arc,
and has the same length than the humeral process (processo
post-cleitral). The Process post cleitral has a rectangular
form and the lateral shields covers between 1/3 and
1/5 on the surface of the flanks.
Brown body with scattered
small black spots. Irregular
spots in the dorsal fin
and the belly is white overall. Depending
on the colour of the substate they will apear to
be either a dark or
a lighter brown.
Care & Compatibility
Very peaceful addition to
a community aquarium. This is another doradid that
prefers safety in numbers assuming that you can purchase
them. Recommended that you keep at least 4 specimens
Females are slightly
larger than males.
Finely shredded shrimp and
bloodworm. Tablet and flake foods.
Ossancora:Meaning "bony anchor" which
refers to their distinctive pectoral-fin spine and
shoulder girdle. punctata: From the Latin
punctatus = 'spotted'.
JLO and MH Sabaj Pérez (2011) Ossancora,
new genus of thorny catfish (Teleostei: Siluriformes:
Doradidae) with description of one new species. Proceedings
of the Academy of Natural Sciences of Philadelphia
161, pp. 117–152. Conservación Internacional;
seris de Guías Tropicales De Campo. Pecos del
medio Amazonas Región de Leticia. 546 p. Sabaj, M.H. and C.J. Ferraris, Jr.
2003 Doradidae (Thorny catfishes). p. 456-469. In:
R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.)
Checklist of the Freshwater Fishes of South and Central
America. Porto Alegre: EDIPUCRS, Brasil. Sands, David;
Back to Nature Guide to Catfishes.
1996. p. 60-61. 128 p. ScotCat Article:The
Family Doradidae or "Talking Catfishes"