Olyra (fish)

Olyra longicaudata

Olyra is an Asian genus of catfish, which is known primarily from the North East of India and Myanmar. A single proof is also from Nepal and the kind described in 2013 Olyra astrifera comes in southern Kerala (South India ) ago.

Features

Olyra catfish are 5.8 to 14.5 cm long and are elongated, scaleless and unarmored. Head and snout are flattened. The eyes are small and overgrown with skin. The fish have eight barbels. The gill covers are inclined towards the front standing dorsal fin. The dorsal fin has 7 or 8 soft rays, hard jets are missing. The anal fin is supported 15-23 fin rays. A far back, just before the tail fin lying, low adipose fin is present. The pelvic fins have six fin rays. The pelvic girdle has a well-developed, back -lying outgrowth, which is clearly separated from the anal fin. The caudal fin is forked or pointed ends. The number of vertebrae is 48 to 53

Habitat

Olyra species normally occur in slow-flowing, shallow waters with muddy bottoms.

System

The genus was described in 1842 by Olyra the UK, based in India physicians and zoologists John McClelland. It is often associated with a stand-alone, only the genus Olyra containing and thus monotypic family Olyridae. Phylogenetic analyzes showed, however, that it is Olyra is a highly specialized genus of catfish sting ( Bagridae ).

Species

Currently ( mid-2013 ) there are six valid species:

• Olyra astrifera Arunachalam, Raja, Mayden & Chandran, 2013
• Olyra burmanica Day, 1872
• Olyra collettii ( Steindachner, 1881)
• Olyra horae ( Prashad & Mukerji, 1929)
• Olyra kempi Chaudhuri, 1912
• Olyra longicaudata McClelland, 1842 ( type species )