limas are no problem in a tank ur size.
synos are good and can hold there own against bigger chichlids my big synos chase anything that comes to close.
ther are smaller pimlodella species out there other than pictus.
avoid hemibagrus espicially wykki and nemurus both are very aggressive and get too big to be happy in your tank for life.
Zonata are very aggressive cichlids mine was an absolute sod even at 4" he killed a 10" pearsii. I would get rid of him and then get the catfish you want. or if he may well kill anything else you put in there as they will be new in his territory. if he attcked a rtc then he will attack most other fish cos most rtc's would just try and swallow the cichlid whole . (or mine would)
synos are good and can hold there own against bigger chichlids my big synos chase anything that comes to close.
ther are smaller pimlodella species out there other than pictus.
avoid hemibagrus espicially wykki and nemurus both are very aggressive and get too big to be happy in your tank for life.
Zonata are very aggressive cichlids mine was an absolute sod even at 4" he killed a 10" pearsii. I would get rid of him and then get the catfish you want. or if he may well kill anything else you put in there as they will be new in his territory. if he attcked a rtc then he will attack most other fish cos most rtc's would just try and swallow the cichlid whole . (or mine would)