Well had the dithers for a week now. Only one dissappeared during the night. Other than that it looks like the jag leaves them alone. I have silver dollars now too.
Thanks boon..Yeah he does have a small nuchal hump which is what surprised me when I picked him up. THe previous owner must have taken really good care of them. I picked it up from a 55 gallon already with two large oscars in it.