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The Jack Dempsey (Rocio octofasciata) is a species of cichlid fish that is native to freshwater habitats from southern Mexico to Honduras, but also introduced elsewhere. [3] [4] [5] Its common name refers to its aggressive nature [6] and strong facial features, likened to that of the famous 1920s boxer Jack Dempsey.
This fish is an mbuna cichlid that lives in alkaline water with the PH of 7 to 9. It is a tropical fish and lives in temperatures from 22 to 28 °C (72 to 82 °F). The hardness of the water range from 10-20. They are very aggressive and are only kept with other similarly aggressive African cichlids, with one male to two or more females.
It is the most popular African cichlid amongst aquarium hobbyists. [1] These fish are mouthbrooders; the female lays her eggs on the surface of rocks and then scoops them into her mouth where they brood for 18 days before being released. The electric yellow cichlid is set apart from other African cichlids by its striking electric yellow coloration.
The electric blue hap is a popular aquarium fish due to its colouration. It should be kept in tanks of no less than 150 litres. A semi aggressive fish, only one male is recommended per tank; however if large numbers are kept in a spacious enough environment, it is possible to keep more than one. Tank mates must be selected carefully.
Juveniles are tan colored with silver-blue flecks and lack the bright iridescent blue, green, and orange coloration and long, flowing fins of adult specimens. In nature, A. rivulatus lives in a tropical climate and prefers water with a 6.5–8.0 pH , a water hardness of 25.0 dGH , and a temperature range of 20–24 °C (68–75 °F).
This species has a specialized diet, feeding on the fry and larvae of other cichlids. [2] It reaches a total length of 17.9 cm (7.0 in). This species is also seen in the aquarium trade and sometimes goes by the name Haplochromis Jack Dempsey. [3] It is currently the only known member of the genus Naevochromis. [4]