Shoebill mob

They would spawn in swamps and mangroves and would be peaceful towards the player, they would often catch fish, they would also eat small mobs like frogs, tadpoles, baby turtles and baby zombies. help you with some things like defending you in some things, it could emit a sound that would scare nearby mobs (any mob), and it could fish for the player, being useful for making 100% automatic fishing farms, by giving puffer fish to two you it would reproduce and they would lay an egg, which hostile mobs would try to destroy. When it dies it will drop fish and feathers but the intention is not to kill this mob.