River Piranha Plants first appear in New Super Mario Bros. Wii, where they appear in World 5-1 as common enemies. When Mario is not around, they blow green spike balls like a Ptooie's method of attacking. When Mario approaches, they suck in and bring the spike ball to their lips and slowly blow it upwards to attack. Just like regular Piranha Plants, they can be defeated with fireballs or a Super Star. Hitting it with an iceball will also freeze it in place. The spike ball itself can be taken out with a shell or the Super Star, after which the River Piranha Plant will sweat and panic in place, unable to do anything.
New Super Mario Bros. U / New Super Luigi U / New Super Mario Bros. U Deluxe[edit]
River Piranha Plants appear in Super Mario Run starting with the version 3.0.4 update. In the World Tour mode, they only appear in the level Spike Bar Jungle.