Oily fish, also known as blue fish or fatty fish, are species of fish with oil (fats) in soft tissues and in the coelomic cavity around the gut. Their fillets may contain up to 30% oil, although this figure varies both within and between species.
Oily fish, also known as blue fish or fatty fish, are species of fish with oil (fats) in soft tissues and in the coelomic cavity around the gut. Their fillets may contain up to 30% oil, although this figure varies both within and between species.
Source: Wikipedia "Oily fish" · CC BY-SA 4.0
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