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<p>A single specimen of the Red-stripe anthias <i>Pseudanthias gibbosus</i> (Klunzinger, 1884), was collected from Pamban fishing harbour, Gulf of Mannar (GoM) along eastern coast of India, representing the first record of the species from this region. The specimen measuring 157&#xa0;mm in total length was captured from a bottom trawl at 50–100&#xa0;m depth. Prior to this collection, <i>P. gibbosus</i> had been documented from the coast of Kerala. The species exhibits a prominent broad red band extending from the operculum to the caudal-fin base distinguishes this species from related congeners. The specimen exhibits a laterally compressed body with a lunate caudal fin, and three distinct opercular spines. Comparison of the mitochondrial cytochrome c oxidase subunit I (COI) genetic marker utilised in DNA barcoding produced negligible pairwise genetic divergence values (0–0.5%) between <i>Pseudanthias gibbosus</i> and its synonym <i>P. fasciatus</i>, while higher divergence values ranging from 9.6% to 22.8% were observed between <i>P. gibbosus</i> and other congeners available in published databases. This study adds new distributional information on <i>P. gibbosus</i> and highlights the need for further demersal-sea faunal surveys to document the species diversity in the Gulf of Mannar region.</p>

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Integrative Taxonomic Assessment of the Red-Stripe Anthias Pseudanthias gibbosus (Klunzinger, 1884) from the Gulf of Mannar, India

  • 期刊论文

  • 发表日期：

    2026年5月24日

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  • J. Joyson Paul,
  • R. Durairaja,
  • N. Jayakumar,
  • N. Daniel,
  • T. Ravikumar,
  • M. Sharumathi,
  • K. Balaprakash,
  • C. Sudhan

摘要

A single specimen of the Red-stripe anthias Pseudanthias gibbosus (Klunzinger, 1884), was collected from Pamban fishing harbour, Gulf of Mannar (GoM) along eastern coast of India, representing the first record of the species from this region. The specimen measuring 157 mm in total length was captured from a bottom trawl at 50–100 m depth. Prior to this collection, P. gibbosus had been documented from the coast of Kerala. The species exhibits a prominent broad red band extending from the operculum to the caudal-fin base distinguishes this species from related congeners. The specimen exhibits a laterally compressed body with a lunate caudal fin, and three distinct opercular spines. Comparison of the mitochondrial cytochrome c oxidase subunit I (COI) genetic marker utilised in DNA barcoding produced negligible pairwise genetic divergence values (0–0.5%) between Pseudanthias gibbosus and its synonym P. fasciatus, while higher divergence values ranging from 9.6% to 22.8% were observed between P. gibbosus and other congeners available in published databases. This study adds new distributional information on P. gibbosus and highlights the need for further demersal-sea faunal surveys to document the species diversity in the Gulf of Mannar region.