Angels need a far bigger tank then what you have them in and im surprised your jack dempsey hasnt killed all your fish. Getting the other RAM out ASAP would be recommended as they are a community fish not to be kept with large aggressive cichlids like dempseys and even tiger barbs and rainbow sharks will pick on bully a RAM as will convicts.
Rehome the RAM and the Angels as the barbs will pick on them as will the convicts and dempsey and when the convicts breed theyll kill everything in your tank protecting their eggs then fry.
Good luck, sounds like you got some bad advice from whoever sold you these fish
Rehome the RAM and the Angels as the barbs will pick on them as will the convicts and dempsey and when the convicts breed theyll kill everything in your tank protecting their eggs then fry.
Good luck, sounds like you got some bad advice from whoever sold you these fish