Orange Chromide or Etroplus maculatus are among the few cichlids found in India & Sri Lanka; these amazing fish live in both Freshwater with high alkalinity & Brackish water's. Hence, you can keep them both in Freshwater & Brackish water aquarium set-ups in home aquarium, this depends on where you brought your fish from.
Natural Habitat of Orange Chromide Cichlid includes, lakes, lagoons, brackish water estuaries of Southern parts of India. In their habitat they act like a cleaning fish of the larger Green Chromide (also called as Karimeen locally), orange chromide cleans the skin of green chromide of parasites & fungi. They mostly feed of algae, aufwuchs & are also known to eat eggs of green chromide. In home aquarium Orange Chromide can grow around 3 inches, since they can be kept in both brackish water set-up & freshwater set-up, this makes them one of the prime option in case you are thinking of getting dwarf cichlid's. Orange chromide are also well behaved, they are not agressive to other fish & only try to chase any fish which gets too close to their nest when they are breeding. You would also be surprised with the personality these fish have, they are one of the most interesting fish to watch in an aquarium.