Mouflon the "Systema Naturæ", Linnaeus and Gmelin treated the mouflon and argali as one species. Von Schreiber used the combination "Ovis aries musimon" as early as 1782. In 1792, Robert Kerr listed the "Corsican argali" as a separate variety of argali ("Ovis Ammon europaea"), writing I have introduced this variety on the authority of Mr Pennant, who distinguishes between the Argali of Corsica and the Siberian, though the difference seems chiefly in colour ; one specimen brought from that island by the famous Paoli, differed from the above in colour, having a large white spot on the front of the neck,
Class A Wild Trout Waters statewide angling regulations by the Pennsylvania Fish and Boat Commission. The official definition of Class A Wild Trout Waters is "streams that support a population of naturally produced trout of sufficient size and abundance to support a long-term and rewarding sport fishery". These streams are considered to be the best angling streams in Pennsylvania and most of the state's 67 counties contain at least one. Class A Wild Trout Waters are virtually never stocked, although many were prior to receiving their designation. There are different total biomass criteria for different species and combinations of species, but for brook trout alone,