The spread of the non-indigenous species Bregmaceros nectabanus Whitley, 1941 (Osteichthyes: Bregmacerotidae) in the eastern Mediterranean

This study reports the first record and some features of two individuals of the Lessepsian migrant species smallscale codlet, Bregmaceros nectabanus, found in the stomachs of two individuals of European hake, Merluccius merluccius, sampled in the northern Ionian Sea (eastern Mediterranean) during the MEDITS International Bottom Trawl Survey. The two European hake were collected on muddy bottoms in September 2021 at 63 m depth (39.34950 oN; 16.52350 oE) and at 240 m depth (39.07156 oN; 17.12626 oE). Their morphological traits together with otolith and scale characteristics allowed the identification of the two speci- mens found in the stomachs as B. nectabanus. The analysis of the stomach contents for the larger individual is also reported. This finding underlines the utility of stomach content analysis as an indirect method to study the biodiversity of deep-sea ecosystems, including the spread of non-indigenous species as indicators of global warming.