Small animals, insects, fresh water fish (eels or crucian carp) are raced along a straight course with bets placed on which will win, though customers gathered not because they were interested in the race but because the animals themselves were interesting or funny.
-小動物や昆虫や淡水魚（ウナギやフナ）などを使い直線コースのレースを行い勝敗を予想させるものでレースよりも出走する生き物が珍しかったり面白いので客が集まった。