whoa, thats crazy. 7 months, huh? Sure most have been hungry.
I had a goldfish like that last year, who just magically dissappeared overnight. I'd assumed my cat ate him, as this wouldnt be the first time.
lo and behold, 2 months later i flip over a piece of wood and he just pops out from a wedge in the wood. Every single one of his fins were torn and his body was so skinny. Shame he didnt live long after that.