Clark's nutcracker
Just below the lake there is a barrier to prevent upstream fish movement. Between June 26 and 27, 2010, Juneau-area scientists conducted a two-day wildlife survey of the Cropley Lake/Fish Creek drainage area. Dolly Varden trout has been noted residing in the lake. The fish in the lake are small, ranging from . A single Clark's nutcracker was seen at the lake on July 5, 1975.