Tubenose Goby

Systematics

Proterorhinus marmoratus, known as the tubenose goby, was formerly considered as the only representative of the genus Proterorhinus with a native range extending to the Caspian Sea basin, and a recent invasive range in the freshwaters of Europe and North America. In the 2000s it was split into several cryptic species based on the molecular and further morphological analyses. In the current concept, P. marmoratus is applicable only to marine and brackish water populations of the Black Sea basin. Freshwater populations of this basin are now referable to the western tubenose goby (P. semilunaris), except for a local Crimean Proterorhinus tataricus.