Author: Ruffing, Lambert & Stauffer, 2006
Comments: <i>Petrotilapia</i> species have broad, fleshy lips with numerous slender teeth that are used to comb the algae on rocks for diatoms and loose algal strands (Ref. 6256, 87181). Adult <i>Petrotilapia</i> males establish territories; females, juveniles, and non-territorial males are found either singly or in schools throughout the rocky habitat (Ref. 6256). <i>Petrotilapia microgalana</i> males patrol territories at an average depth of 10-15 m; females are usually encountered in the upper region (Ref. 79521). It inhabits the deeper rocky environments of Lake Malawi (Ref. 87181). 