Question

in the past, spearfisher s used a burning torch to spot fish in the night waters. each spearfisher is only allowed to harvest twenty fish. all but two fish must be less than fifteen inches long. female walleye are bigger than the males. a five - pound walleye can lay more than 100,000 eggs! it is good practice to protect the female fish so they can continue to lay eggs and keep walleye populations in healthy numbers. how do the ojibwe protect walleye populations? they only fish for walleye at night. they count the total number of walleye eggs that a female lays each year. they use spears to catch walleye. they set a limit on the number and size of walleye a spearfisher can catch.

Explanation:

The text mentions that each spear - fisher is only allowed to harvest twenty fish and specific size requirements for the fish. This shows they set limits on the number and size of walleye a spear - fisher can catch to protect the walleye population.

Answer:

They set a limit on the number and size of walleye a spear - fisher can catch.