Evolution and the continuation of the species. The fish that eat their babies see no reason to allow them to grow up and compete with their limited food resources. And their limited space resources as well. If the fishes territory extends beyond the boundaries of the water it is placed in then there is no need for further competition for the resources. Wherein if the water extends past the territorial limit then why not go forth and multiply. Obviously they can't stop them selves from multiplying but they can stop them selves from depleting their limited resources, It think this is the answer to the question. The solution, get an amazon river trib in your back yard or get a 1200 gallon aquarium. Take your pick. Fish -- o o o <%{{{{}>< o o o <*}}}}>< ------------------------------------------------------------------------- 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"!