Fisher (noun)

1. A person who catches fish as a commercial or recreational activity.
2. A mammal, Martes pennanti, native to North America, that is similar to a marten but has a longer body and a bushy tail.

Origin:

Old english fischere, fisc(e)ra, from fisc ("fish") + -ere, agent suffix.

Examples:

1. He is a professional fisher who has been fishing for over 20 years.
2. The fishers were out early in the morning, setting their nets.
3. The fisher caught a large salmon.
4. The fisher is a fierce predator that feeds on small mammals.
5. The fisher population has been declining in recent years due to habitat loss.