Tank size 350 ltr,stats are all in line,stock is 5 clown loach 2 gold gouramis 11 cardinal tetra 2 mollies,well 2 or 3 of my cardinals are looking a bit bad,the worst has like a spike under the belly its weird it sticks out quite a bit and also from obove the cardinal seems to have a bent-curvy appearance,the other two just seem to be thining,also i have a clown loach that has become very thin and im hand feeding for a few weeks to make sure he recieves food as the other 4 clowns are nice a chubby,though i have noticed that after my clowns eat they tend to get chubby bellys very quickly so i only feed them for a min or two max three times a day!,i hope i dont have fish tb or dropsy any help will be recieved with thanks.