Species that contain: Gymnocephalus and schraetser [ 2 ] records

danubiensis, Perca Gronow [L. T.] in Gray 1854:112 [Catalogue of fish collected and described by Laurence Theodore Gronow; ref. 1911] Danube River. Syntypes: BMNH 1853.11.12.4 [Gronovius coll.] (1, skin). Type catalog: Wheeler 1958:219 [ref. 13434] but as holotype. •Synonym of Acerina schraetser (Linnaeus 1758) -- (Wheeler 1958:219 [ref. 13434]). •Synonym of Gymnocephalus schraetser (Linnaeus 1758) -- (Kottelat 1997:172 [ref. 22952]). Current status: Synonym of Gymnocephalus schraetser (Linnaeus 1758). Percidae: Percinae. Habitat: freshwater.

schraetser, Perca Linnaeus [C.] 1758:294 [Systema Naturae, Ed. X v. 1; ref. 2787] Southern Europe. No types known. Spelled Acerina schraetser by Reisinger 1830:19 [ref. 18620]. Spelled schraitzer by Cuvier in Cuvier & Valenciennes 1829:13 [ref. 4879]. •Valid as Acerina schraetser (Linnaeus 1758) -- (Berg 1949:1049 [ref. 20662]). •Valid as Gymnocephalus schraetser (Linnaeus 1758) -- (Collette & Bănărescu 1977:1453 [ref. 5845], Lelek 1987:288 [ref. 22962], Kottelat 1997:172 [ref. 22952], Popova 1998:117 [ref. 23588], Hanel 2003:64 [ref. 27894], Parin 2003:S3 [ref. 28536], Vassilev & Pehlivanov 2005:177 [ref. 28369], Hanel & Lusk 2005:364 [ref. 28804], Kottelat & Freyhof 2007:529 [ref. 29996], Geiger & Schliewen 2010:131 [ref. 30887], Parin et al. 2014:354 [ref. 33547], Ćaleta et al. 2015:30 [ref. 34877], Ćaleta et al. 2019:188 [ref. 37026], Nagy et al. 2023:358 [ref. 40348]). Current status: Valid as Gymnocephalus schraetser (Linnaeus 1758). Percidae: Percinae. Distribution: Central and eastern Europe: Danube River drainage. Habitat: freshwater, brackish.