Awesome fish... however with the way the fish turns its body the tank is defintely not wide enough. If you say the fish is 34" then based on the pics my guess is that the tank
is only 24" wide. Since you're in the Phillipines the weather should be warm enough to keep the fish in an outdoor pond. My suggestion is that you either upgrade your tank or keep it in a pond. Imagine you were the fish that would be like prison.
in the PI... almost all LFS here sells mosquito fish as feeder fish and cheap too about 20 cent a bag of bout 20 fish... most of silver/blk aros raisers feed them feeders... that maybe the reason for the aros size...