Without instructions to know which fish are the good ones, and which are bad...this game kinda blows, dude. And when you go back to start it again, the "play" button is missing!

The main character has a crippling lack of "stamina" and range. However, I do like the title screen as that's one funky lookin' fishface.

nope

The game has a critical flaw that detracts both from the gameplay and from the merit of the game itself as a concept. How can you tell a good fish from a bad fish, merely at sight? The small green fish are registered as "Good," But their smiles look really smug. It's hard to really tell which ones you are supposed to hit and which you aren't..and contact with the "good" fish still hurts you!

This is terrible.The music is awfull and the concept is simply ridiculous.

Good concept, graphics and music.
But seriously, HOW ARE WE SUPPOSED TO KNOW WHICH FISHES ARE EVIL AND WHICH ONES ARE GOOD!?
Also, the hitbox from the player and the enemies are terribly adjusted. It's really easy to die by mistake.
You need to fix that as soon as possible.