Dulčić J., Dragičević B., Grgičević R., Lipej L. 2011. First substantiated record of a Lessepsian migrantthe dusky spinefoot, Siganus luridus (Actinopterygii: Perciformes: Siganidae), in the Adriatic Sea. Acta Ichthyol. Piscat. 41 (2): 141-143.Abstract. One specimen of the dusky spinefoot, Siganus luridus (Rüppell, 1829) (♀, total length = 17.3 cm, total weight = 87.61 g), a lessepsian migrant, was captured in the Mljet Channel (Southern Adriatic, Croatian coast) on 15 November 2010. This is the second record of this species from the Adriatic, but first well documented and based on the captured specimen. First record occurred earlier in the Northern Adriatic, but was based solely on underwater observations.