the range of the brook trout is the northeastern part of Canada and the United States. Also has been introduced in North America, South America, New Zealand, Asia and many parts of Europe.
Clear, cool, well-oxygenated freshwater rivers and lakes, close to shore. Brook trout thrive in temperatures that remain below 18.8 C (66 F)
The total time of incubation depends on factors such as temperature and oxygen.
Brook trout behavior varies greatly depending on habitat. Some populations travel great distances to spawn others travel comparatively short distances upstream. There is a high amount of territorial behavior found in brook trout. Territory is established shortly after emergence from the reed as a result of aggressive behavior which increases when factors such as current velocity and the availability of food heighten.
Brook trout reach maturity on an average at the age of 2 and spawn once every year in late summer or autumn. Spawning grounds require loose clean gravel with a good supply of upwelling, oxygen-rich water. The female clears away debris and salt with rapid fanning of her caudal fin while on her side creating a redd which is a pit 4-12 inches in depth. Males compete for the spawning by nipping and displaying themselves to the competitor males. During spawning, eggs and milt are simultaneously discharged. After spawning, the female digs slightly upstream from the redd and lets the current carry down gravel to fill the redd. After hatched, the fry stay until the yolk sac is absorbed them swim up and out.
Food habits vary according to life and history stage. A brook trout will eat virtually anything its mouth will accommodate. Anything from mayflies and midges to worms and frogs and even small mammals like voles.