actually 漁師 is super easy to distinguish

People always complain about mixing up 漁師 with 猟師 or even 両親. It’s literally so simple. Look at the kanji. 漁 has the water radical, and 師 means teacher. So a fisherman is literally a 'water teacher' who teaches the fish. Hunters don't do that. If you just remember they are teaching the sea, you'll never confuse it again. It's basic logic.