New Deep-Sea Fish Species Identified in Arabian Sea
Scientists at the ICAR-Central Marine Fisheries Research Institute (CMFRI) have discovered a new species of deep-sea fish in the Arabian Sea off the Kerala coast, officials announced on Friday. The newly identified species, named Cyttopsis indica (common name Indian dory), was found at depths ranging from 350 to 500 metres along the continental slope of the eastern Lakshadweep Sea.
The discovery was based on six specimens collected from deep-sea trawl landings at Sakthikulangara fishing harbour in Kollam, Kerala. A research team led by CMFRI scientist Dr. Ratheesh Kumar R confirmed the species through a combination of conventional taxonomic analysis and advanced molecular techniques.
Correcting a Long-Standing Taxonomic Error
According to CMFRI, the fish found in the Indian Ocean had previously been misidentified as Cyttopsis rosea. However, the latest study established that Cyttopsis rosea is confined to the Atlantic Ocean, while the Indian specimens represent a distinct species. DNA analysis revealed significant genetic divergence from all other known species in the genus, correcting a long-standing taxonomic misidentification.
The fish belongs to the genus Cyttopsis, a primitive group of marine fishes commonly known as "dories." The findings have been published in the latest issue of the Indian Journal of Fisheries.
Significance for Marine Biodiversity
The institute said the discovery underscores the immense potential for documenting previously unknown marine life in the deep waters of the Arabian Sea off India's southwest coast. CMFRI highlighted that this finding adds to the growing body of knowledge about deep-sea biodiversity in the region and emphasizes the need for continued exploration and conservation efforts.
Dr. Ratheesh Kumar R noted that the use of molecular techniques was crucial in distinguishing the new species from its Atlantic counterpart. The study demonstrates how modern taxonomy can resolve long-standing confusions in species identification, particularly in understudied deep-sea environments.
