Firanha's

Since the Nether is recieving an update, I thought it would be a great time to upload this idea i've had for a while: Firanha's. These terrifying creatures swim around in the many lava lakes found in the Nether. They're about the size of dolphins, emit light and smoke particles. Since lava isn't transparent, they swim at the surface so players can clearly see where they are. They are not as common as Zombie Pigmen, but are still quite frequently found. They are hostile, meaning that they will attack any nearby players. If a player decides to build a bridge above the lava and gets near a Firanha, it will jump out of the lava (similar to Dolphins) to try to push him off the bridge. If the Firanha isn't able to get close however, it will instead spit out hot bursts of lava at the player, who is set on fire by this. When out of the lava, they will eventually suffocate. If you manage to kill one if these, they will drop a rare item (not sure what item, let me know down below). Since they are in lava though you have to kill it on land if you don't want the item to burn instantly. I think this mob could add some more life to the lava lakes in the Nether, similar to what the fish mobs did in 1.13.