BLACK FISH
black fish: translation
1) commercial quantities of fish landed illegally
2) dark-coloured fish caught for food, e.g. fish in the Tonle Sap, a lake in Cambodia, that live there year-round and survive adverse conditions, cf. white fish (2). Taxa include Clarias, Channa, Anabas, Oxyeleotris
3) fish recently spawned (Scottish dialect)