A Squalius lepusculus, original drafts by Heckel for the lithograph of the species presented in the original description (Heckel, 1852a: 109, pl. XII) and, later, in Heckel and Kner (1857: fig. 104) B a specimen collected in the Danube in January 1841 (NHMW Archive).

 
 
  Part of: Palandačić A, Chai MJ, Shandikov GA, Akkari N, Frade PR, Randolf S, Berg H-M, Mikschi E, Bogutskaya NG (2024) An annotated catalogue of selected historical type specimens, including genetic data, housed in the Natural History Museum Vienna. ZooKeys 1203: 253-323. https://doi.org/10.3897/zookeys.1203.117699