A large number of carp have died at Valens Lake Conservation Area over the weekend. The
cause of the die off, based on the symptoms observed on the fish by HCA ecologists, is
thought to be Koi herpes virus (KHV), which only affects carp, koi, and goldfish. Carp are a
non-native species in Valens Lake.
http://conservationhamilton.ca/carp-valens/