n.
Rare species of marten ( Martes pennanti , family Mustelidae) found in northern forests of North America.
The fisher is related to weasel s and is similarly shaped. It has a bushy tail, tapered muzzle and low, rounded ears. Adults are usually 2025 in. (5063 cm) long, excluding the 1317-in. (3343-cm) tail, and weigh 315 lb (1.46.8 kg). Fishers hunt on the ground and in trees, attacking various rodents and other animals; they also eat fruits and sometimes nuts. It has been trapped for its valuable brownish black fur.