tyrannochromis macrostoma

Tyrannochromis macrostoma in the wild. Photo by Ad Konings​

Commonly known as the big-mouth hap, Tyrannochromis macrostoma is widespread throughout Lake Malawi. Adults can be found in deeper shores along rocky areas. T. macrostoma is a piscivore and mbuna are what is usually on the menu.

Tyrannochromis macrostoma isn't seen much in the hobby although it is available. These fish can get quite large, 12+ inches, so large tanks are a must. T. macrostoma usually isn't very aggressive, but with their large mouth anything that will fit into it is fair game. For breeding, they are best kept in groups of one male to multiple females. Females will hold the developing fry for quite a long time before releasing them. Males can be intolerant and aggressive toward holding females, so other fish (more females or dithers) are needed in order to distract him. To discuss Tyrannochromis macrostoma, visit the Lake Malawi Species forum.