First record of Favonigobius gymnauchen (Bleeker, 1860) (Teleostei: Gobiidae) in the north-western Indian Ocean: Evidence for potential taxonomic diversity

Gobioidei distribution DNA barcoding Persian Gulf Sharp-nosed sand goby

Authors

  • Fatah Zarei Ichthyology and Molecular Systematics Research Laboratory, Zoology Section, Department of Biology, School of Science, Shiraz University, Shiraz, Iran.
  • Hamid Reza Esmaeili Ichthyology and Molecular Systematics Research Laboratory, Zoology Section, Department of Biology, School of Science, Shiraz University, Shiraz, Iran.
  • Seyyed Hassan Hashemi Department of Environment, Bandar Abbas, Hormuzgan Province, Iran.
April 25, 2023

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A single specimen of Favonigobius gymnauchen was captured from the Iranian coast of the Persian Gulf, north-western Indian Ocean. Species identification was performed based on sequence analysis of the mitochondrial COI barcode region. This significant record from the northern Persian Gulf, adds a new species to the gobiid fauna of the north-western Indian Ocean and represents the easternmost documentation of the species. The presence of a deep phylogeographic break between the Indian Ocean and the West Pacific groups of haplotypes suggests the potential existence of hidden taxonomic diversity, hereby highlighting the necessity of a comprehensive morphological and molecular analysis of the sharp-nosed sand gobies from the two oceans.