E. coli is probably one of the most widespread bacteria that there is - its concentration is usually an indicator the the level of faecal contamination. It is usually a harmless bacterium but will cause problems when the opportunity arises and a person's immunity is depressed through some other illness. Thrtough the widespread use of antibiotics over the last 40-60 years, mutant strains have developed that are more aggressive and resistant to most antibiotics (but that is another story). Unless your fish are weakened due to some other cause, I would not see much risk in changing the water with E coli in the water. If you are really concerned, can you take water out of a hot water system (most bacteria cannot survive over about 45 celsius) or else treat the water with a broad spectrum cure-all (eg MELAFIX) At 04:56 AM 5/25/00 -0700, you wrote: >Considering where these little beauties come from and the bacteria and >viruses that have come from their habitat, I don't think a little bacteria >from around here would affect them at all. After all The trout don't seem >affected by beaver fever around the B.C. area....humans on the other >hand..:)..can you say " feet don't fail me now". > > >At 08:04 AM 5/25/00 +0100, you wrote: >>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"! > > > >------------------------------------------------------------------------- >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"! > > ------------------------------------------------------------------------- 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"!