It is a beginning, but still a lot to improve!

It is already too brutal and horrible for a child's game, and it is too calm and comfortable for other games.

The monsterlike elements are restricted to mouth and eyes and skin colour, the bodyshape and the movements are that of a slowly 'pedestrian' of a 'fish town'.

It has to show its energy and its unbeatable will to bite and rip out your flesh and life out of your body.
Let it tear his head from left to right when it attacks, let the tail, flipper, fin move faster, more sudden. Add something, which is moving nervous and sudden while in idle state.

He looks a bit like a bull terrier which is a plus. Changing the animations could reach already the value of what one would expect from a dangerous beast!