Rutilus pigus

The pigo (Rutilus pigus), or Italian roach, is a species of freshwater ray-finned fish belonging to the family Leuciscidae, which includes the daces, Eurasian minnows and related fishes. This species is found in northern Italy and southern Switzerland.

==Taxonomy== The pigo was first formally described as Cyprinus pigus in 1803 by the French naturalist Bernard Germain de Lacépède with its type locality given as Lake Como, Lake Maggiore and other lakes of Italy. This species is now classified within the genus Rutilus in the subfamily Leuciscinae of the family Leuciscidae. This species was previously considered to be the same species as the cactus roach (Rutilus virgo), of the Danube River system. However, molecular analyses published since the late 2000s have shown that these are two separate valid species.