Blastomussa is a genus of stony coral and is classified as a large polyp stony coral. In the aquarium trade the species Blastomussa merleti with small polyps and Blastomussa wellsi with larger polyps can be found regularly.
Blastomussa vivida can only be found in the trade ocassionally, but it is not easy to distinguish it from B. wellsi. Differentiation is possible on the basis of polyp size - polyps of B. merleti are usually max 7 mm, Blastomussa wellsi usually 9-14 mm, and Blastomussa vivida have very large polyps up to 25 mm. Also, Blastomussa vivida grow flatter skeletons than the other two species.
Normal color variations of Blastomussa are green in the center with a red or gray-purple border, and less commonly completely green, purple, or red. All species are unproblematic to keep and can handle a variety of water parameters, as long as the KH remains constant and they do not get too much light and burn. They like slightly elevated nutrient levels and can be target fed supplemental LPS pellets or frozen food, but this is not usually necessary.
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