When Do Cutthroat Trout Spawn

Bears prey on cutthroat trout from early May through mid August Gunther 1985.

When do cutthroat trout spawn. The female selects the sites and excavates the redd. The eggs hatch in a few weeks to a couple of months. The magic temperatures range is at least 42 to 44 F 6 to 7 C.

In coastal areas some cutthroat have been observed spawning as early as February due to warmer water temperatures. 10092019 Cutthroat by nature are not deep-water fish. In northern California their migration up spawning streams begins following the first substantial rainfall which usually occurs between August and October.

Cutthroat trout are late spring to early summer spawning fish. Cutthroat turn red and swim upstream to their spawning grounds. 13112020 While rainbow and cutthroat trout spawn between the months of February and May brown trout and brook trout spawn in the fall months between September and December.

They prefer the upper-most portions of these streams areas that are too shallow for other salmonids. The newborn fry frequently migrate back to lakes to rear after 1 to 2 years in their native stream. 18032021 It happens all over the park from May through mid-July.

Cutthroat spawn in the spring in running water burying their eggs in a nest called a redd. 04082015 For a two-month period spawning cutthroat trout are the predominant food source of some bears in the Yellowstone Lake area Mattson et al. Cutthroat trout construct a typical salmonid redd a pit in the stream substrate excavated by the fishs tail in which to lay eggs.

09042018 Youll find spawning cutthroat in these locations and until the middle of June its best to leave these rivers alone entirely. Cutthroat trout spawn in the spring when water tem-perature is above 50. For centuries animals like grizzlies otters and osprey have come to rely on cutthroat as a source of food.