Etroplus maculatus. BLOCH, 1795. Common Name: Orange Chromide. Native to peninsular India and Sri Lanka. Habitat This species is euryhaline and mostly inhabits brackish estuaries, coastal lagoons and the lower reaches of rivers. It also occurs in freshwater habitats, however, including a number of inland lakes in Sri Lanka although it appears to have been introduced intentionally. Maintenance This species can be maintained in fresh or brackish water so long as acidic conditions are avoided. Décor is largely down to personal choice although a degree of structure, perhaps incorporating a sandy substrate, variably-shaped rocks and some driftwood branches, would adequately simulate natural conditions. It is intolerant to accumulation of organic pollutants and requires spotless water meaning weekly water changes of 25-50% volume should be considered routine. Water Conditions Temperature: 20 – 28 °C pH: 7.0 – 8.5 Hardness: 179 – 357 ppm. Diet Observations of wild fish suggest it to be something of a generalist with a tendency to graze aufwuchs and filamentous algae from solid surfaces although it has been observed acting as a ‘cleaner’ for the congener E. suratensis, consuming parasites and fungi from its body and fins (see ‘Notes’). In the aquarium it can be offered high quality prepared foods but displays a preference for small live or frozen items such as chironomid larvae (bloodworm), Tubifex, Artemia, mosquito larvae, etc. Behaviour and Compatibility Relatively peaceful unless breeding and will not predate on any but the smallest fishes.Reproduction This species is a biparental substrate spawner which forms temporary pair bonds when reproductively active. The fry at first feed on the mucus secretion that the parents produce-much like Discus fish, after 1-3 days of being free swimming. Afterwards Artemia nauplii are good for feeding the fry.