Conservation friendly Coelacanth

The Coelacanth is critically endangered fish that would only rarely spawn in the deepest oceans and underwater caves. They would be roughly similar in size to a dolphin, thus making them unable to be caught in a bucket. They would not drop any items to encourage the player not to harm them, instead maybe feeding them a certain item would grant the player a temporary buff. Coelacanth would be passive towards the player, but would attack any drowned within range, stunning them with bubble attacks that stop the drowned in place and damage them.