New records of the lessepsian fish Fistularia commersonii (Osteichthyes: Fistulariidae) from the central Tyrrhenian Sea: signs of an incoming colonization?

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Abstract
A total of fifteen adult specimens of the so-called ‘lessepsian sprinter’ Fistularia commersonii were captured by bottom trawlers and gill-netters operating along the Latium coasts, Italy, in October–November 2007. This non-native species is established in the eastern Mediterranean but it has been sporadically reported beyond the Strait of Sicily. Never before has the species been recorded in such large numbers from a single locality in the western Mediterranean. These records may suggest an incoming establishment of a self-sustained population of the species also in the western Mediterranean and they document for the first time the presence of a lessepsian fish in Latium waters. Biometry and meristics of the available specimens of F. commersonii and data on their diet and reproductive condition are given.

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