once i get the 300 gal up and running and stocked how hard is it to introduce a new pike (a possible mate perhaps) to the marmorata i plan on getting i ask because of the cost of the fish at nearly 100 dollars a fish (i know they can be had cheaper but there is also shipping and what not) buying a group of 4-6 and hoping for a pair is a pricey option so once i had one raised it to a certain size and sexed it is it possible to find one of the opposite sex without them killing each other or is the same ol crap shoot

