'Scales' in the Bible

"You may eat anything that lives in the water that is, you may eat anything that has fins and scales either from the seas or from the rivers.

But anything that doesn't have fins or scales whether from the seas or the rivers any of the swarming creatures and living creatures in the waters are detestable for you.

Anything that doesn't have fins or scales in the waters is a detestable thing for you."

if when the priest examines the skin rash and indeed it appears more extensive than skin deep, and it's accompanied by fine, yellowish hair, then the priest is to declare him unclean. The scales on the head or the beard are an infectious skin disease.

But when the priest examines the scales of the skin rash and it doesn't appear more extensive than skin deep and there's no black hair in it, then the priest is to isolate him for seven days.

When the priest examines the skin rash on the seventh day and finds that indeed the scab did not spread, there's no yellowish hair on it, and the scales don't appear more extensive than skin deep,

"But if the scales spread on the skin after his cleansing,

You are not to bring to the LORD an offering that is blind, fractured, mutilated, or infected with ulcers, scurvy, or scales. You are not to present any of them as an offering made by fire on the altar for the LORD.