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This fish can be kept in an aquarium that is 30 gallons or larger. If it is desired to keep more than one in an aquarium a tank that is at least 6 feet in length should be used and they should be added at the same time. The largest scientifically measured blackcap gramma was 10.0 cm / 3.9 inches. The body colour varies from magenta to purple and there is a jet-black diagonal cap running from the lip to the foredorsal fin. It is not advisable to house the blackcap gramma in an aquarium smaller than 30 gallons / 115 litres. Include a lot of rocks, crevices and caves in the set up. Since this species is commonly found in deep waters, it is best to avoid sharp aquarium lights. The blackcap gramma is considered reef compatible and is commonly kept in reef aquariums. You should however keep in mind that it might devour really small invertebrates, such as copepods, amphipods and isopods. The blackcap gramma can start acting territorially towards other fishes, including members of its own species, once it has settled in an aquarium. The recommended water temperature for blackcap gramma is 72–78 °F / 22–25.5 °C. Keep the specific gravity at 1.020-1.025 and the pH-value between 8.1 and 8.4. The blackcap gramma is a carnivore species that needs to be kept on a meaty diet in the aquarium. It will normally accept dead food without much ado and you can for instance feed it mysid shrimp, fish flesh, crustacean flesh, and mixed frozen preparations suitable for marine carni...
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