I have had a full grown pair of convicts in my 29g tank for about 6 months now. They usually did ok. Breeding, fighting, breeding ect until about a month ago when my female seemed way too close to death. I decided to get a dither and went to petco and got a yellow african cichlid. It did well and added a lot to the tank so I decided to leave him in. I then came home from work two days later and my dad had added two more africans. I have had two convicts (5 inches and 3 inches) and 3 africans (all about 2 inches) for about a month now. It has worked so far but I'm worried it won't last. Any advice would be greatly appretiated. Thanks for reading.