i am debating my self whether or not i should get callchromis pleurospilus or callochromis stappersi. i have a 100 gallon about 5 feet long, 12 inches wide and 26 inches tall. 75% of the tank is sand and scattered escargot shells. the rest is rocks and plants. My question is if i can keep callochromis pleurospilus in a group of eight in my tank. the tank mate are 6 alto lamprologus sumbu new shells, 6 multies, 3 brevis, and fifteen jumbo cyps. thanks.