Thanks a lot for your feedback! I'm glad you liked my game.
I was giving the hitboxes a lot of thought, I've tested the game both with small hitboxes that cover only the heads of the fish, and with large full-body hitboxes, and the larger ones suited me better as I was able to see exactly when would I die, so I decided to go with the large ones. But I can imagine that you may expect smaller hitboxes, so if I get more feedback like that, I'll change it in the future.