River Piranha Plant

River Piranha Plants are sub-species of Piranha Plants that appear in New Super Mario Bros. Wii. They appear in World 5 as common enemies. As their name implies, they live in rivers. When Mario isn't around, they blow green spike balls like a Ptooie's method of attacking. When Mario approaches however, they suck in and bring the spike ball to their lips and slowly blow it upwards to attack.