Soft corals of Sinularia and Sarcophyton are the most notorious allelopathic corals of which the Umbrella leather is usually Sarcophyton. What allelopathy means for the aquarist is noticing signs of inhibited growth and tissue necrosis. One of my favorite corals, Sinularia flexibilis, is well known for releasing its particular chemical substance (flexibilide) and able to kill nearby hard corals. Mixed reef tanks that comprise of soft, lps
, and sps
often show signs of irritation in corals as they battle each other either through allelopathy or physical and often require the use of carbon and more frequent water changes in hopes of diluting aggressive substances. Although the possibilities always exist, I have yet to experience a coral completely dieing off in aquariums due to such unless the tank was plain ignored for some time.
Now that I have rambled, these would be a couple of my favorite corals:
Euphyllia (Any and all!)
Rhodactis mussoides *metallic morph* (Often called elephant ear, but not to be confused with the fish-eating coral Amplexidiscus)
Sinularia flexibilis (Allelopathic)
Fungia, Disk coral
Caulastrea, Candy cane
Cespitularia, Blue xenia!