Sigh...I have seen this look before

[naesco]

I too have tried them without success and will not try them again.
I think that the problem with them is collecting shipping and feeding.

Cyanide is used to catch fish that are hiding in the coral. For example all cryptic wrasse like 6 lines and leopards are cyanide caught because they are so difficult to get out of the coral rock. It is best to avoid them because we know they are cyanide caught.

Mandarins are the same except that some fishers are using a stick with a prong on it to catch them successfully.