Talk:Fire Slime/@comment-27831991-20170615054258/@comment-31826059-20170615095857

And a seahorse isn't a horse, but looks like a horse, just as the Fire Slime isn't fire but is on fire. Also, since they need a constant supply of ash to survive, meaning they must be burning stuff the whole time, and thus be on fire the whole time. So, I'd guess that's where the name comes from, from their need to burn to survive.