Here is a video of my 75-gallon Lake Tanganyika community tank. I am really into keeping cichlid communities, especially groups of species from locations with a lot of different cichlid species. Lake Tanganyika is interesting because there are so many fish with different forms and lifestyles, which makes establishing a community of several pretty easy to do. In this case, there are only two species in this aquarium that have close to the same niche. Do you know which two they are?