Interesting game! Eating fish is very satisfying, and the attraction mechanic is unique. It was a bit difficult to understand what killed me but I got to depth 450ish. I found out that kiting fish for later was a valid strategy because it seems that they were rarer as you went deeper (or maybe I was just unlucky). So I would try to gather like an army of fish at the beginning and eat them little by little, as needed. Worked very well until one of the dangerous fishes killed me.
Good job!