Why was the grayling called by St. Ambrose, "the flower of fishes .?

Because of its agreeable odour, and brilliant colours. A fine specimen is thus described: - "The belly is silvery, with yellow; and the pectoral, ventral, and anal fins, are almost gold-coloured; the back gray, with small black spots; and the back fin beautifully coloured bright purple, with black and blue spots." In flavour, the grayling is " like the most exquisitely tasted of all our fish, the red mullet."

The grayling is supposed to have been introduced by the monks, in the time when England was under the See of Rome, from the rivers that contain it being near the ruins of great monasteries. Thus, the Avon, near Salisbury; the Ure, near Fountain's Abbey; the Wye, near the great abbey of Tintern, etc. There are, however, rivers so situated, wherein the grayling is not found; for instance, in the Stour, at Canterbury.