Kaperax [Mob Idea]

This Reptilian Monster would lurk in the murky waters of the swamp biome. Waiting patiently for its prey. It has a long snout [Resembling a Crocodile] that it would use to eat fish, or any player that comes close. When on land, it moves very slowly, but when in water it glides along the water with speed. Its defence on land consists of its club tail. When Players try to attack the Kaperax on land, it smashes its tail on the ground pushing the player back, or even hitting them. The Kaperax would drop a special scale [Kaperax Scale] which would be used to make special Kaperax Scale Boots which would speed you up under water [Similar to turtle shell]. Below is a design of the creature, hope it gets noticed :)