i like the concept of the game, playing as a swarm of fishes and taking down boats! I just wish there are more details in the game that would make the gameplay more enjoyable, like seeing how many fishes I have, the HP of boats, etc. I think the SFX for the fish damaging the ship isn't enough as I didnt know initially that I was damaging the boats, more so I was avoiding them, so having some sort of damage indicator will be good. I also follow the kill indication very quickly and lost right away.
Overall, definitely love the concept, the art and music is good! I love the fanfare style but ocean/navy version of it, I think it is very catchy. Having variation of music will be good too, like dynamic music when attacking boats, or even fighting the big boss. I think that will be amazing! Art wise, I don't know what to include to make it better, maybe having a variety of different looks for each boat types will be good.