Yes, you can keep Jack Dempsey with African cichlids. This is a popular combination in the aquarium hobby due to their compatibility and the fact that they are both highly active fish. The key to keeping these two types of fish together is appropriate tank size and proper environmental conditions. Jack Dempseys prefer warm water (78-86°F) while African cichlids like cooler temperatures (72-80°F). It's important to provide plenty of hiding spots for both species so that they can retreat when feeling threatened or stressed out. Additionally, good filtration will be necessary as Jack Dempseys produce a lot of waste from their very active lifestyle while African cichlids require clean water conditions to stay healthy. As long as these factors are taken into consideration when setting up your tank, there should not be any issues keeping them together peacefully!