Synchiropus sechellensis (Actinopterygii: Perciformes: Callionymidae), a new alien in the Aegean Sea and Hellenic waters

Synchiropus sechellensis Regan, 1908 was discovered in Kastellorizo Isl. (Levantine Sea, Greece) in September 2014, few months after its first record in Antalya Gulf, Turkey. Later, in February 2016, the species was recorded for the first time in the Aegean Sea, in Rhodes Island. The short time interval between the findings indicates a possible establishment in the area and a dynamic spread of the species northwards in the Eastern Mediterranean.