This fish, though esteemed by the moderns for its delicacy, was little regarded by the ancients. Although it abounded in the lakes of the Roman empire, it is generally mentioned by writers only on account of the beauty of its colours. About the end of September, they quit the deep water to which they had retired during the hot weather, for the purpose of spawning. This they always do on a gravelly bottom, or where gravel and sand are mixed among stones, towards the end or by the sides of streams. At this period they become black about the head and body, and become soft and unwholesome. They are never good when they are large with roe; but there are in all trout rivers some barren female fish, which continue good throughout the winter. In the common trout, the stomach is uncommonly strong and muscular, shell-fish forming a portion of the food of the animal; and it takes into its stomach gravel or small stones in order to assist in comminuting it.
Of all fresh water fish, there are none that require, or so well afford haste in cookery, as the Trout, they are best when caught under a fall or cateract - from what philosophical circumstance is yet unsettled, yet true it is, that at the foot of a fall the waters are much colder than at the head; Trout choose those waters; if taken from them and hurried into dress, they are genuinely good; and take rank in point of superiority of flavor, of most other fish.
Tench
