Bonny; Cammallanus worms were a hot topic a while back. I noted this page: http://www.thekrib.com/Diseases/nematodes.html#11 The general opinion seemed to be that Levamisole was the best treatment. Piperazine SEEMED to work in some cases from what I've seen, though others have been less enthusiastic about it's effectiveness (I think you need to keep the treatment up for a considerable period of time and possibly retreat after a month or so). I recently tried Fluke Tabs® on a case with disappointing results. The idea that the worms REQUIRE an intermediate host or that the likely source of infection would be a crustacean does not seem to hold true for infections in the aquarium and transmission from fish to fish through ingestion seems to be the most common mode (but only in my opinion). ------------------------------------------------------------------------- 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. Search http://www.digital.com for "Apistogramma Mailing List Archives"!