The firemouth cichlid (Thorichthys meeki) is a species of cichlid fish that can be found in the rivers of Central America, ranging from the Yucatán Peninsula in Mexico, through Belize, and into northern Guatemala.
In their natural habitat, firemouth cichlids typically inhabit shallow, slow-moving, often turbid water with a pH range of 6.5 - 8.0, although they have also been reported to live in cave systems. As a tropical species, they require warm water with a temperature range of 23–30 °C (75–86 °F) to thrive.
The species is named after the bright orange-red coloration on the underside of its jaw, which earned it the common name "firemouth." Male firemouth cichlids are known to flare out their gills and expose their red throats as a threat display to ward off male rivals from their territory.