Uncommon fish species, some caught in deep waters, occurred in the last fifteen years at Rhodes and other Dodecanese Islands (SE Aegean Sea, Greece) and their findings are reported. They concern the cartilagineous fish Odontaspis ferox, Dalatias licha, Rhinobatos cemiculus, Rhinobatos rhinobatos, Gymnura altavela and the bony fish Sudis hyalina, Nemichthys scolopaceus, Chlopsis bicolor, Apterichthus anguiformis, Apterichthus caecus, Regalecus glesne, Diplodus cervinus cervinus, Brama brama, Lampris guttatus and Luvarus imperialis. Information on the findings of other eleven species, with a poorly known local occurrence, like Galeus melastomus, Oxynotus centrina, Torpedo nobiliana, Dipturus oxyrinchus, Pteromylaeus bovinus, Mobula mobular, Ariosoma balearicum, Hoplostethus mediterraneus, Aphia minuta, Parablennius incognitus and Mola mola is also given. The records add knowledge on the Hellenic ichthyofauna diversity and on the distribution of these species in the Eastern Mediterranean.