Fresh Fish
noun
Fresh fish is fresh fish (and the best fish, nom nom nom).
せんぎょ
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
俺の魚屋で働いている限り、従業員は福利厚生として鮮魚をもらう権利を、放棄することはできないぜ。
Employees cannot waive their right to receiving fresh fish as a benefit as long as they work for my fish shop.