Really cool concept! had a bit of fun.
gotta say that the charge fish felt like the absolute best imo, (never caught a gold fish sadly) the charging fish could take out up to 10 at a time when lucky. It might have been worth increasing the size of the exploder fishes blast radius, most I ever hit with that ability was 3, just to even out the playing field between it and the charger.
If you were to expand the idea it would be cool if you could store fish for later use, so you can collect then go explosive on the enemies. I wasnt a fan of the constant stream of enemies tbh, since your basically guaranteed to take damage while fishing, what could have been cool is if the enemies came in waves, that way the player could have breaks to focus on fishing. Just a thought. Again tho great work, cool idea executed well!
This was a really cool entry all around tho! great work