An interesting and probably very smelly subject! It looks like the rest of the fish is scattered around - by what I wonder - an otter, what else do you have? You could almost have two pictures here. It would be a good idea to make the far bank of the river, horizontal. If you can also darken the foreground a bit, it might help the body stand or in this case, lie out a bit better!
You've got the body's angle right, oblique is better than vertical or horizontal on this instance, well done!
You've got the body's angle right, oblique is better than vertical or horizontal on this instance, well done!