i've been noticing the last few weeks about 10% of the bream we catch have a bloody spots(sore) on them,normally they have been on the bottom are around the tail of the bream.about 3 years ago when we stocked the pond i did put redear's in with bream.to date i dont think we've caught more than a few dozen.do you think this could be worms ???and if so,what should i do about it.not sure if the redears lived due to when we put them in there was about 3-4 feet of water in the pond.i've never had this problem before.