Genetically confirmed first records of an egg and a juvenile roundscale spearfish, Tetrapturus georgii

• DOI: 10.1111/jfb.16043
• Publication Date: 2025-01-03T03:03:54Z
• Authors: Marko Freese; Tina Blancke; Lasse Marohn; Jan‐Dag Pohlmann; Josefin Sundin; Klaus Wysujack; Reinhold Hanel

Abstract The roundscale spearfish ( Tetrapturus georgii ) is a poorly studied species with limited information available on its biology, ecology, and population status. Although the adult life stage of morphologically distinguishable from closely related such as overexploited white marlin Kajikia albida ), misidentification common, adding to uncertainties connected assessments these pelagic highly migratory species. genetic studies have recently confirmed distinction congeneric species, much reproductive biology dynamics T. remain unknown, underscoring need for further research guide conservation management strategies. This study reports first documented records an egg juvenile . Here, we provide photographs, morphological descriptions, collection site data genetically specimens obtained during two multipurpose surveys in Sargasso Sea Subtropical Convergence Zone. These findings contribute new insights into early stages, ecology this elusive