Arsonfish

Fish Facts
The Arsonfish is a local fish species that has mutated a set of heat-producing organs. These fish can easily produce temperatures up to 1000 degrees celsius, easily igniting objects around it. Or it WOULD ignite things if it weren't underwater all the time. It just makes lame bubbles, GOD. Anyway, it's pretty high on the food chain since it can just boil its prey into submission. It barely exhibits hunting behavior at all, mostly just picking a high traffic area and heating the shit out of it, then picking any dead fish off the ground.

Update! - New research has been done by biologists in the field, and more information has been uncovered about the Arsonfish! These fish have been observed using their long, pointy dorsal fins like matches! Often they are used as a lure to attract prey, and they create a striking image when many Arsonfish gather in one place near the surface, creating what appears to be a carpet of flame! However, their interesting use of their biological tools is quite the fire hazard. Still, it'd be pretty cool to pick one out of the water and use it to, like, light a cigarette or something.