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First Record of the Oilfish, Ruvettus pretiosus (Perciformes: Gempylidae) from Korea  

Kim, Byeong Yeob (College of Ocean Sciences, Jeju National University)
Song, Choon Bok (College of Ocean Sciences, Jeju National University)
Publication Information
Korean Journal of Ichthyology / v.29, no.3, 2017 , pp. 224-228 More about this Journal
Abstract
Two specimens of Ruvettus pretiosus (227.0 and 238.3 mm in standard length), belonging to the family Gempylidae, was firstly collected by using a gill net from the eastern coastal waters of Jejudo Island, Korea in November 2013. This species is characterized by having the following morphological traits: XV, 17~19+2 dorsal fin rays; II, 15~16+2 anal fin rays; belly keeled between pelvic fin and anus; body covered with cycloid scales, interspaced with rows of sharp bony tubercles. R. pretiosus can be easily distinguished from three Korean Snake mackerels (Thyrsitoides marleyi, Rexea prometheoides and Gempylus serpens) by having belly keeled between pelvic fin and anus, and cycloid scales covered the body and interspaced with rows of sharp bony tubercles. Based on morphological and molecular approaches, the specimens were identified as R. pretiosus. We propose new Korean names, "Gi-reum-chi-sok" and "Gi-reum-chi" for the genus and species, respectively.
Keywords
First record; Ruvettus pretiosus; Gempylidae; Jejudo Island;
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