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<p>The Korean rockfish <i>(Sebastes schlegelii</i> Hilgendorf, 1880) – a newly established invasive species in the Black Sea – is native to the northwestern Pacific Ocean. This study presents findings on the discovery, feeding habits, age, growth, and sexual maturation of this species in its new environment. A total of 18 specimens collected from the Black Sea were examined. It was determined that the Korean rockfish is now present along all Black Sea coasts, except for the brackish northwestern region, and has also been observed in the Sea of Marmara. The largest recorded specimen in the Black Sea was a female measuring 40.4&#xa0;cm in total length (TL) and aged 3 years. The length-at-age of all examined specimens was greater than that observed in its native range. The diet of the Korean rockfish in the Black Sea primarily consisted of fish and shrimp. The sample included both immature and mature individuals; however, no evidence of successful reproduction in the Black Sea has been documented to date. The prospects for further colonization and population growth of the Korean rockfish in the Black Sea are considered favorable, which could pose a significant threat to the local ecosystem.</p>

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Expansion and biological traits of the non-indigenous Korean rockfish Sebastes schlegelii in the black sea

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月1日

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  • Igor Tamoikin,
  • Dmitry Kutsyn,
  • Tatyana Gavruseva,
  • Irina Vdodovich,
  • Pavel Donchik

摘要

The Korean rockfish (Sebastes schlegelii Hilgendorf, 1880) – a newly established invasive species in the Black Sea – is native to the northwestern Pacific Ocean. This study presents findings on the discovery, feeding habits, age, growth, and sexual maturation of this species in its new environment. A total of 18 specimens collected from the Black Sea were examined. It was determined that the Korean rockfish is now present along all Black Sea coasts, except for the brackish northwestern region, and has also been observed in the Sea of Marmara. The largest recorded specimen in the Black Sea was a female measuring 40.4 cm in total length (TL) and aged 3 years. The length-at-age of all examined specimens was greater than that observed in its native range. The diet of the Korean rockfish in the Black Sea primarily consisted of fish and shrimp. The sample included both immature and mature individuals; however, no evidence of successful reproduction in the Black Sea has been documented to date. The prospects for further colonization and population growth of the Korean rockfish in the Black Sea are considered favorable, which could pose a significant threat to the local ecosystem.