Cat-eLog Right Arrow Bagridae Right Arrow Olyra

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Scientific Name Olyra astrifera  Arunachalam, Raja, Mayden & Chandran, 2013
Common Name
Type Locality Kerala, Manimalai River at Kottangal village, 20 km from Mundakayam, India, 76°28'58.8"N, 76°40'31.2"E.
Pronunciation oh LIE rah
Etymology Olyra: From the Greek olyra, meaning a kind of grain (probably rye); probably in allusion to the shape of the fish. The specific epithet astrifera refers to the distribution of star- shaped dots all over the body; feminine noun in adjective.
Jump to next section Species Information
Identification The bagrid catfish genus Olyra is known from the Ganges-Brahmaputra river system in the northern part of the Indian subcontinent. It is also known from localities southwards to the Manimalai River in southwestern India and eastwards to the Mae Klong River drainage in western Thailand. The genus is a supported monophyletic group diagnosed by the following combination of external characters: anguilliform body; unossified first and second dorsal-fin elements; and greatly enlarged upper caudal-fin lobe.

Olyra astrifera can be distinguished from its congeners (except O. horae) by its adipose fin confluent of with caudal base, pectoral fins with weak serrations and strong dentitions, a greater length of the adipose fin base, a shorter distance of dorsal fin origin to origin of adipose fin and pores of the lateral line canal. It is further distinguished from O. horae by the number of anal fin rays (15 vs. 21) and the upper lobe of the caudal fin greater than one half longer than lower lobe (vs. slightly longer than lower).
Sexing Males have a conical papilla reaching to base of caudal fin.
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IUCN Red List Status Critically Endangered
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Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference International Journal of Zoology Research v. 3 (no. 2), pp 52, Figs. 2-3.
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Last Update 2019 Oct 09 12:00 (species record created: 2010 Dec 17 06:25)