Could actually even be longer than four years that I've had him. I've lived here for three and had him at least a year before at my last house, so that's why I said at least four. So perhaps he won't get any bigger?? He and my bichir have been this size they are now for a very long time. Don't notice them getting any bigger. Called the lfs here that has big fish and they said they'd be happy to sell the Peacock Bass on consignment if I need to go that route once they arrive. Will see what they are like once they get here and decide if I can keep them for a little while (at least one) and then rehome later. They are holding a nice-sized Severum for me. I appreciate all the responses and tips for sure.