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Monticle - Adjoined walls which have become so divided by corallite valleys that only short conical sections remain (as seen in Hydnophora and sometimes Mycetophyllia, Colpophyllia and Pavona).
Leaf coral, Pavona cactus The parent colony is from Palau, collected in 1988. I received this fragment in October, 1994 as part of the Acropora Challenge.
Some corals, such as Bubble coral, Elegance Coral, Candycane (Caulastrea) are considered hardier than others, for example hardier than some of the Euphyllia, Plate, Lettuce (Turbinaria), Cactus (Pavona) type corals.
Corals of the genera Favia, Favites, Scolymia, Pavona, and Cynarina all have this capacity (Chadwich, 1987). These filaments can kill or devour other coral polyps through a process similar to digestion.
 See also: Fish, Water, Aquarium, Micro, Species
  
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