I thought of that, and I wondered if maybe they are doing a bit of competing, one having a bit stronger sting or get away from me chemical attitude. The tentacles are really shortend on both of them right now, and I wonder why that is. Seems like there is a bit of stress to each of them. IMO.
· Heteractis malu, with shorter tentacles and a sturdier body (previously called Discosoma malu). Heteractis malu is perhaps the least spectacular of all the Heteractis varieties. It is very often imported and can be found in large numbers in pet stores. It can be kept in invertebrate aquariums but it is recommended that, when doing so, no other anemones are placed in the same tank. Nettling or the exudation of toxins may affect this anemone. For instance, adding a Carpet anemone in addition to H. malu would mean the end of the latter in a short manner of time. H. malu has another drawback: not many clowns will form symbiotic associations with it.
· Heteractis crispa, (previously known as Radianthus kuekenthali) with numerous long tentacles and a wide to very wide oral disc. This anemone can at times be confused by stores with Entacmaea quadricolor. The resemblance can be sufficient to justify this mistake (see later). H. crispa is a beautiful specimen for any aquarium. Again, kept alone, it can be added to an invertebrate aquarium (see remarks above). The number of tentacles can be so great that they are all entangled.
Thomas
