Description:
Dorsal spines (total): 2; Dorsal soft rays (total):
6. Can be diagnosed from Ossancora
punctata by
having maxillary barbel with elongate fimbriae inserted
in two distinct rows along anterior margin, one dorsally
and one ventrally, mental barbels with elongate fimbriae,
and anterior nuchal plate reduced, diamond shaped,
not sutured to epioccipital. Can be distinguished
from Ossancora
eigenmanni and Ossancora
fimbriata by having the unique combination
of gas bladder with numerous diverticula that are
thin, moderately elongate (often branched), and grouped
in roughly paired, small fascicles along the periphery
of anterior face, shoulder and lateral walls of anterior
chamber as well as lateral walls and posterior face
of posterior chambers (vs. peripheral diverticula
absent or few, restricted to anterolateral shoulder
and sometimes anterior face of the anterior chamber
in Ossancora eigenmanni; terminal diverticula
lacking or indistinguishable from other peripheral
diverticula (vs. short terminal diverticula present
in Ossancora fimbriata; infranuchal plate
not greatly expanded ventrally (vs. greatly expanded
ventrally, reaching level of posterior coracoid process
in adults in Ossancora fimbriata); nuchal
foramina absent (vs. usually present, except in some
large adults, in Ossancora fimbriata); less
than 20 teeth per ramus on premaxilla and dentary
(vs. 25-50 in Ossancora fimbriata); mental
barbel with elongate fimbriae in single row (vs. two
rows in Ossancora fimbriata). Aquarium
Care: Very peaceful addition to a large 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 together. Good
water quality is required. Diet:
Finely shredded shrimp and bloodworm.
Common
Name:
None
Synonyms:
None
Family:
Doradidae
Distribution:
South America:
Amazonas basin in Bolivia, Brazil and Peru; Ilha do
Marajó near the mouth of the rio Amazonas to
laguna Yarinacocha, an oxbow lake connected to the
río Ucayali; río Mamoré and upper
Guaporé, Madeira drainage.
Size:
16.0cm. (6¼ins)
Temp:
22-25°C (71-77°F)
p.H.
6.0-7.0.
Reference:
Birindelli, 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. Froese, R. and D. Pauly. Editors.
2018. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 06/2018 ). 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.
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