I'm no doctor or vet, but it is quite unusual to find pathogens which are able to be effective in many different organisms, especially if they have to enter via the stomach, it's a pretty dangerous entry route because of all the acids and enzimes. I would expect that E.coli is relatively species specific. If you are really worried, have a word with a vet., they'll be able to give you specific info. about this (the advice should be free:-)). Colin ------------------------------------------------------------------------- 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://altavista.digital.com for "Apistogramma Mailing List Archives"!