Abstract Loma acerinae is a xenoma-forming fish microsporidium described from common ruffe Gymnocephalus cernua (Perciformes: Percidae) and also found in Ponto-Caspian gobies (Gobiiformes: Gobiidae). This casts doubt on the strict host specificity of this parasite. The largest subunit RNA polymerase II ( rpb1 ) was used as genetic marker parasite isolated six species Perciformes G. Baltic Sea) ...

This paper is the first report on occurrence of Atherina boyeri in this region. A total 103 individuals A. were caught with fyke-nets (mesh size: 5 mm, polyamide) May and June 2022. The length weight sampled fish ranged from 6.52 to 8.57 cm 1.44 3.46 g, respectively. exponent b length/weight ratio was calculated as 3.091 indicating that species presented an isometric growth. mean value relative...