Currently I have a motoro pup and silver arowana in a 90 gallon and there doing great but I'm getting a new tank for them for Christmas because they are growing like weeds the 240 gallon is 8 feet long and 2 feet wide I know this won't house them for life but i figure I could get a good 3-5 years out of the tank before upgrading again I have been looking around lately for another ray and currently found Leo pups for 550 shipped #1 is that a good price and #2 can I put a Leo with my motoro and if so does it matter what sex I get I'm 90% sure my motoro is a male could I get a female and would they mate once they reach maturity if anything id rather get another ray soon before my motoro reaches maturity