PROBLEM TO BE SOLVED: To provide a pool for a fish passage, which forms a resting region necessary for run up fish, by placing an insertable measure-shaped block at a step portion of the fish passage, to thereby facilitate the run up of fish.;SOLUTION: The pool for the fish passage is formed by freely inserting and setting the measure-shaped block for storing running water even at a location deeper than the difference of the step, at the stepped path of the fish passage. It is desirable that a fishing bank block is inserted and set into the measure-shaped block, to thereby form the resting region which is more stagnant than other regions.;COPYRIGHT: (C)2002,JPO
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