I dont understand, my fish died :-? i am a fish fanatic i do 60% water changes weekly, nitrates always under 20ppm, temp of 77deg. tons of filltration. I just dont get it! he showed no real sines of anything, no abnormal groths, no stomach bloat, nothing. The only info i have is about a week ago i was observing their behavior and noticed (the one that died)he was'nt eating as much or as active as he normaly was, i also niticed he would always hide. yesterday i looked at him and his stomach looked sucked in. has anybody had this problem before? any help is appreciated, thx.