I'm wondering how good of an idea this is. Tank is a 65 gallon, the gramma has been established for over 6 months. The chalk bass would, of course, go through observation and be treated if anything comes up. I'd add all three together. How likely is this to go well? I'd be introducing the ORA captive bred ones, which are supposedly about 1" - 1.25". The gramma is an adult, so I'm not sure if that's an issue. Thanks.