The Fiery Blowlet is an enemy in Hey! Pikmin, it is a younger version of the Fiery Blowhog found in most Pikmin game and like it it use fire as a mean to attack.
The Fiery Blowlet is able to shoot jets of flame or fireballs at Captain Olimar and its Pikmin squad. It can serves as a regular enemy or an obstacle to avoid. Since it uses fire, any Pikmin except Red Pikmin will burn to death if they touch its attacks.
Hey! Pikmin Log
"Some emit long jets of flame, while others discharge volleys of fireballs, like mile runners versus sprinters."