Ranama

Metru Nui
It is unknown weather or not these rahi existed on Metru Nui, or were native only to Mata Nui.

Mata Nui
Ranama were a type of Fire frogs that thrived in the heat of Ta-Wahi, where they swam through the lava flows. To obtain food, a Ranama would wait beneath the molten lava for an unwary Nui-Rama to fly past, then leap forth ensnare the insect with its long and sticky tongue. Most Matoran knew better than to approach one of these fiery Rahi, but praised them, for they reduced the population of the deadly Nui-Rama.