I have 2 1.5'' ElectricBlue Jack Dempsey's together in a 45 right now. I have also a 125g with 2 10'' florida gars and a 4'' female REG JD. I want to buy a senegal bichir. I just saw 2.5'' senegals at petsmart the other day. I can't put a senegal of that size in the 125 right now for obvious reasons so my question is; can I put a senegal around 2.5'' long safely with 2 1.5'' EBJD's? which by the way are fairly aggressive. I'm more worried about the EBJD's more than a senegal. Those little EBJDs set me back 95$ after shipping 
I wouldn't do it.
well the only problem is, that the jack are in the tank first they will rule the tank