Cottus transsilvaniae Freyhof, Kottelat & Nolte, 2005

Family:  Cottidae (Sculpins)
Max. size:  9.73 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Europe: Danube basin in Romania. Found only in the upper river Arges. May occur in other tributaries of lower Danube.
Diagnosis:  Anal soft rays: 12-13. Can be distinguished from other species of Cottus in the Danube drainage by the combination of the following characters: dorsal head length 19-20% SL; 12-13 1/2 anal-fin rays; 18-19 1/2 rays in second dorsal fin; predorsal length 29-30% SL; distance from tip of snout to origin of second dorsal fin 47-50% SL; no distinct transverse bands on pelvic fin; no prickling on body (Ref. 55856).
Biology:  Recorded from a cold and fast-flowing stream (Ref. 59043).
IUCN Red List Status: Endangered (EN); Date assessed: 14 July 2023 (B1ab(iii)) Ref. (130435)
Threat to humans:  harmless


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