The occurrence of the alien species Anadara kagoshimensis is reported for the first time in the Ría de Arousa (Galicia, NW Spain) during 2013. Living specimens of this species have been recognized by morphological analysis. The cytochrome c oxidase subunit I gene has been partially sequenced and Maximum likelihood and Bayesian analyses carried out to confirm its identification. This new record reaffirms the presence of A. kagoshimensis, previously reported as Anadara inaequivalvis, along the Atlantic European coast extending the known distribution range in Spanish waters to the south.

New meristic and descriptive data of Eckström's topknot Zeugopterus regius (Pleuronectiformes: Scophthalmidae) from Galician waters (north-west Spain) is presented. The presence of a higher number of dorsal and anal fin rays as well as more than one elongated ray in the dorsal fin is described for the first time. Furthermore, other distinctive characters poorly known as the fringe-like appearance of first dorsal ray and numbers of distinct round-blotches on the body are reviewed. Length distribution and length–weight relationship are also shown.

The observed Centrophorus granulosus were caught with bottom trawl and longline between 500 and 1300 m depth off the continental slope of Galicia and the Galician Bank (north-eastern Atlantic) between 1996 and 1998. The main biological data obtained were: a maximum recorded size of 166 cm TL (total length); females mature at 147 cm TL; between 1 and 10 mature oocytes by females of 55–80 mm diameter and as many as 6 pups per litter, and size at birth ranging between 35–47 cm TL. These results differ greatly from those compiled in the literature suggesting different populations or perhaps a possible misidentification.