Hello Mach Yes you will need a bigger tank if you try to keep more then one trio. But if you get down to just the one trio, a ten gallon tank with lots of caves and hiding spaces is all i use for my panduro! John ------------------------------------------------------------------------- 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.