Hi
I am new to this forum, so I hope my question is not too basic...or that I am worrying too much but.. I have some discus with 7 clown loaches, one black ghost knife fish and two gold nugget plecos. I have noticed that sometimes a discus will have a slight scratch mark on it. It's always really small and not that noticeable and doesn't seem to affect the discus at all. Could one of the other fish be responsible? I have read that Clowns can possibly be interested in the slime coat on discus but my Clowns seem well behaved and during the day are not interested in my discus fish at all. I have nothing sharp in my tank so it can't be any driftwood or anything else. Am interested in anyone's view on this. (Everyone of my fish appear to be living in harmony and not stressed). Thanks
