First equatorial records of four marine fishes (Actinopterygii) caught off Lembeh Island, northern Sulawesi, Indonesia
2025
Wibowo,Kunto | Peristiwady,Teguh | Makatipu,Petrus | Oktaviyani,Selvia | Oktaviani,Dian | Wahyudewantoro,Gema
This study reports the first equatorial records of four demersal marine fish species, Plectranthias yamakawai Yoshino, 1972, Aulacocephalus temminckii Bleeker, 1855, Iniistius geisha (Araga et Yoshino, 1986), and Randallichthys filamentosus (Fourmanoir, 1970), collected off Lembeh Island, northern Sulawesi, Indonesia. All these species had been previously reported only from higher latitudes in the Northern and Southern Hemispheres, leading to their classification as anti-equatorial. Their presence in equatorial Indonesian waters at 1.4°N latitude suggests that their distributions extend beyond those usually regarded as anti-equatorial and that a re-evaluation of their biogeographical classification would be in order. In particular, the need for further research on deep-sea fish diversity in extremely low latitude regions is highlighted.
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