It’s now days since the dream happened (Fri. night/Sat. morning), so I don’t remember many details.
All I know is that I was a fish, in a large fish tank/pond, filled with many different kinds of fish & fish-like species. There was some sort of evil villain standing above the tank. Also, I was Scott Pilgrim, but in fish form (you could tell by the eyes). I also remember that if I ate various species of the other fish in the tank, I would gain certain powers. Presumably these were used to fight the looming villain.
I don’t remember most of the powers, but if I ate a jellyfish, I would get really round, like a pufferfish, and glow from the inside. I don’t know what this accomplished, but it looked really cool. :) (Oh, and don’t worry about the jellyfish, after I was done using the fishy-powers, I would spit the “eaten” fish back out, no harm done).
If more details come back to me, I’ll add them later.