This is very straightforward yet fun. Nice gradual increase in difficulty as it introduces the new fish. The audio design is simple yet effective, though the whole 'wall of fish' sound is pretty loud together, you could try adding some different sfx or random pitch variation to stop the doubling volume effect. Overall I had fun, especially hiding behind the turtles. If expanded on this could be a lot of fun!

It's really addictive!

Nice! I like the artwork and the familiar gameplay. Easy to understand and get into!