I finally took the plunge and bought two Senegals from Petsmart. These are my first Polypterus and they are pretty cool, I gotta tell ya. I put them in a 75 with some Vics. After about 2 days, 1 of the Sens was still floating and I noticed he had some blood around the base of his/her pectoral fins. Looked pretty bad. I moved it to a 20g high and it seems to be recuperating pretty well. It's eating and behaving normally I guess. The Sen that is still in the 75 doesn't come out much, but he eats like a horse. My question is, if I wanted to put this Sen back in the 75 should I get maybe 1 or 2 more? They are both juveniles, maybe 3" each. I didn't see what was beating on it, but my guess is it was the other Sen, I saw it chasing the other one. Would adding a couple more spread the aggression similar to how it works with cichlids? Any friendly advice for a rookie?