Gnathochromis permaxillaris
authority not recorded
This species was originally classified in the genus Limnochromis. There are a couple of colour morphs available and these should not be mixed in aquaria, as they may hybridise. In nature, this fish feeds in a similar way to Geophagus species, in that it will sift sand through its gills to extract invertebrates hidden in the substrate. It is a deep water fish and has been recorded foraging at depths of up to 200 metres. These movements seem to be related to the presence of the plankton on which...
