Arowanas
I agree that they will be too big for your tank. BUT.... if you really want one
The store I work at have 3 green ones for $350 Canadian each.
The red tail gold sold for $1000.
Houston is a bit far though. Make you deal.
Get me a hotel room (minimum 3 stars) and 2 superbowl tickets for the game in two weeks and I will drive down and personally deliver one of the green ones to you in exchange