Abstract
The experiment was undertaken so as to see that the size of fishing hook and the skill of angler might have effect to the average size of fish caught, Acanthogobius flavirnanus, a common game fish in Tokyo Bay.
The two sizes of hook for this bait fishing (Fig. 1) are used by twelve anglers, which can be classified to the three degrees of skill, (expert, middle class and beginners) the according to their careers in sports fishing. All the anglers, on the same boat, fished at same fishing ground, where supposed to have the same group of fish, having the same size composition.
The size of fish caught by them was measured, and the figures were examined by statistical method.
As it is clear even in the graphs and the table of size distribution of fish caught, the remarkable differences of average size were found by the difference of size of hook used (Fig. 2). And by the degree of skill of anglers some difference of average size of fish caught was recognized between experts and others (Fig. 3).
