klingsa":3a5988id said:
I've done quite a bit of research on this topic, and I have read that BTA's are indeed induced to form their bubble tips when hosting a clown.
According to Fautin and Allen (widely accepted as the experts on this topic) in Anemone Fishes and Their Host Sea Anemones, "Bulb seems to be related to presence of fish, and can disappear." pg. 26.
Delbeek - what is your evidence that this is nonsense? Other than saying it is a coincidence.
Sara
Sara:
30 years experience in keeping saltwater aquariums
15 years with reef aquariums
8 years of diving in the Indo-Pacific region from Japan to Fiji to Hawaii.
With over 200 logged dives in that time, I have observed these anemones quite often ... yes they usually have fish ... but not always ... but they also have other factors such as bright light, low nutrient waters, water motion, close proximity to other aggressive organisms e.g. corals, predators, etc etc to react to ... there are too many variables to say that the presence of fish is THE one factor that produces bulbs on the tips. With all the research you say you performed, is this one sentence quote from Fautin and Allen the only thing you found on what affects bulb formation?
Read Fautin and Allen literally ... in your quote they say "SEEMS to be related to the presence of fish" ... this is their impression, not a fact. Since neither of those authors have kept these animals in captivity for 15 years as we have ... I am not sure they are any more qualified to make comments on the behaviour of these anemones in captivity than anyone else.

Our exhibit has over 30 anemones in it as well as a few dozen clownfish ... they spend most of their time in the S. gigantea and S. mertensii ... they don't spend any time in the E. quadracolor. I have another exhibit with 7 E. quadracolor and one S. gigantea anemones, and 6 A. melanopus and a pair of A. chrysopterus. Some of the E. quadracolor with clownfish have bulb tips and some do not.
Take a look at this photo I took in Indonesia. Note that some of the tentacles have bulbs and some don't .... how can the presence of the fish be only a localized effect?? :?:
Aloha!
JCD