Ive got 5 silver dollars, 3 ive had about 4 years and the other 2 i purchased just under a year ago. They breed every few weeks, three males and 2 females. One of the younger Dollars is a male that has just started showing his colors when they breed. Since starting to show his colors i think the other males have started picking on him, as has only happened since he started coloring up, not sure as haven't seen them picking on him myself.
Has had his fins ravaged, missing top of tail fin, one of front pectoral fin, and anal fin ripped off. He just hangs around the heater in the corner of the tank, except for feeding time and is continually getting heater burns, getting very scarred. All of the other silver dollars are in excellent condition.
Are the other males likely to be picking on his now as he matures, if so is there anything i can do to stop it? Will stopping there breeding cycle stop them picking on him, and if so is there any way of stopping there breeding cycle?
Or could it be something else?
Tank is 350L, other fish include bristle nose, tiger loach, zebra loach, skunk loach, rainbow shark, kribisis, angel fish, lemon tetras and flying foxes