EN
A single adult specimen of spotbase burrfish, Cyclichthys spilostylus (Leis et Randall, 1982), was recorded for the first time on 26 December 2011 from the Mersin Bay, north-eastern Mediterranean, Turkey. This is the first record of the spotbase burrfish C. spilostylus from the marine waters of Turkey and third record on the continental shelf in the Mediterranean basin. This is the 61th record of an Indo-Pacific alien fish species present along the marine waters of Turkey.