Hey , i have a 500g tank , it houses 2 monster fishes , was eating very well , could eat a whole cow in a week(well maybe not , chicken maybe)
Waterconditions are perfect , 200kg of live rock , filters , protein skimmer , all there.
Yesterday , they suddenly stopped eating , one of them died this morning , i couldnt stop crying ,
now the other one swimming sideways , i'll post photos of it later , Please HELP