DID YOU KNOW?
Those unsightly black spots on the skin (and sometimes in the meat) of freshwater fish are probably tiny parasites called Neascus metacercariae, or black grub. The black spot is actually a protective case formed around the grub by the fish’s body. Don’t worry—Neascus is not harmful to humans and if you don’t tell your dinner guests, they might think the flecks are just pepper.
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