A Pseudotropheus socolofi tries to nip a Melanochromis johannii's anal fin.
Fish duke it out over the space in front of the dragon rock.
A female Maylandia crabro chases a male out of the way. Note that she is carrying eggs in her mouth. This tends to make females much more aggressive and irritable. A male Maylandia crabro tries to chase a male Melanochromis johannii out of his cave. A female Melanochromis chipokae carrying eggs defends herself from another female with eggs.