Mating territory having a central volcano-shaped mound with a flat or slightly concave top, surrounded by a ditch and value. Prefers quiet, deep water associated with aquatic vegetation, but has been collected in other habitats as well (Ref. 12524, 13337). Found at temperatures between 18 and 35°C (Ref. 54042). Has a very low salinity tolerance (Ref. 2, 58). Occasionally forms schools, is mainly diurnal. Feeds mostly on detritus, (blue-green) algae and diatoms. Juvenile also accepts small invertebrates and zooplankton (Ref. 7248, 52193, 52307), but lose this tendency with age