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<p>We report the second record of the invasive marbled spinefoot, <i>Siganus rivulatus</i> Forsskål &amp; Niebuhr, 1775 (Siganidae), in the Black Sea off the southwestern coast of Crimea (Balaklava Bay). Native to tropical and subtropical waters of the western Indian Ocean, <i>S. rivulatus</i> has successfully established populations in the Mediterranean Sea following its entry through the Suez Canal. Here, we provide biological and ecological data for the collected specimen, including age, growth, sex, gonad maturity, and stomach contents. Comparative analysis with published data from other regions highlights the species’ life-history traits and potential for naturalization in the Black Sea. Our findings contribute to understanding the ongoing tropicalization of the Black Sea and the ecological implications of Lessepsian fish invasions.</p>

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A new record of the marbled spinefoot Siganus rivulatus (Siganidae) in the Black Sea: evidence of ongoing tropicalization

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Igor Yu. Tamoikin,
  • Dmitry N. Kutsyn,
  • Tatiana V. Gavruseva,
  • Irina V. Vdodovich

摘要

We report the second record of the invasive marbled spinefoot, Siganus rivulatus Forsskål & Niebuhr, 1775 (Siganidae), in the Black Sea off the southwestern coast of Crimea (Balaklava Bay). Native to tropical and subtropical waters of the western Indian Ocean, S. rivulatus has successfully established populations in the Mediterranean Sea following its entry through the Suez Canal. Here, we provide biological and ecological data for the collected specimen, including age, growth, sex, gonad maturity, and stomach contents. Comparative analysis with published data from other regions highlights the species’ life-history traits and potential for naturalization in the Black Sea. Our findings contribute to understanding the ongoing tropicalization of the Black Sea and the ecological implications of Lessepsian fish invasions.