First record of the numbray, Narke dipterygia (Bloch & Schneider, 1801) from Iran (Elasmobranchii: Narkidae)

Ali MOMENINEJAD, Yazdan KEIVANY, Vahid SULTAN-MOHAMMADI

Abstract

As a result of our survey in February 2011, a single female specimen of N. dipterygia was found in the tidal zone of Chabahar Bay and it was caught with a small deep net. The fish was transferred in a bucket to the Fisheries Laboratory of Chabahar Maritime University and kept in a salt water aquarium for further examinations. We witnessed the birth of 6 juveniles after 3 days. The female and her juveniles were kept in the aquarium for about six months and fed with live food. After that, they died and were fixed in 96% ethanol. The female fish total length was 172.02mm and weighed 18.21g. The fry total length ranged from 49.90-56.37mm and weighed 1.14-2.1.65g. The length-weight, length-disk length, disk length-electric organ length showed high correlations (r2>0.85), but the relationship between electric organ width and fish weight was low (r2=0.33). Although this species was recorded from the Arabian Sea and western Indian Ocean, this is the first record of this species from the Iranian waters.

Keywords

Biometry, Distribution, Meristics, Morphometrics, Zoogeography.

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References

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