So it seems like it would be a 'take your chance' situation and cross my fingers. I have a good relationship with a few of the local stores and i know that they would take one back if it wasn't working out. I did have a gar (florida) a few years ago. Great fish, very clever and brilliant to watch hunting and feeding, but it wasn't the most agile fish, it was very long and took its time to turn around, my leporinus quickly learnt that they could nip him very easily. He ended up in the main tank at a LFS along with a Redtailed Cat. which was nice to see. Apart from gars, if i decide against an arowana any other suggestions?