Question

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Biologists tagged 150 fish in a lake on January 1. On February 1, they returned and collected a
random sample of 45 fish, 15 of which had been previously tagged. On the basis of this
experiment, approximately how many fish does the lake have?

Answer 1

the lake has 450 fish.

Explanation:

Population of organism by capture recapture method is given by the formula

Population=(First cupture ×Second cupture)/(Marked Recapture)

=> (150×45)/(15)

=450

Therefore the lake has 450 fish.