Lee, This is just my speculation, but you might be letting sneaky fruit flies in when you feed the worms, or the food you use might be infested with their eggs. I got my grindal worms infested with white mites. They are much larger than the ordinary red kind. I had a hard time figuring out where they were coming from, but this infestation happened with regularity, no matter how carefully I subcultured the grindals. I finally found out just recently that they were coming in with some rolled oats (Quaker's old fashioned type - the one used for making oatmeal cookies) that I was feeding to my grindal worms occasionally. I suspect the oats were heavily infested with their eggs since I don't see any mites crawling on the rolled oats (though it's kinda hard to see minute white mites on white oat flakes.) Tomoko ----------------------------------------------------------------------- -- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader