Sexing Picasso triggerfish question   7/30/06
How would I be able to know the difference between the male and female Rhinecanthus aculeatus?  Thanks,
Andy
<Not able to be discerned externally as far as I'm aware. Bob Fenner, out diving with this species and R. rectangulus in HI>

I have a Huma Huma about 4 inches  long. how do I tell the  sex?  7/18/06
<Can't be discerned externally. Some balistid species demonstrate sexual dichromatism, dimorphism... not Rhinecanthus spp. Bob Fenner>

Sexing, Feeding Huma Huma Triggerfishes
How can you tell the sex of a Huma Huma Trigger fish, and how often should a 2" Huma Huma be fed?
<Not externally and a couple of times per day. Please read over the "Triggerfish" materials stored on WWM starting here: http://www.wetwebmedia.com/TriggerArts.htm and the links beyond. Bob Fenner> 
Thank you
Charles

Sexing Picassos
Hello Bob
<Dan>
This is the first time visiting this site and so far very impressed.  I have learned many new things about my Picasso triggerfish and ways of treating problems should they arise.  I do have one questions for you.  Can you visibly tell a male trigger from a female? This has just been something I've wondered about for some time. Thank you
Dan
<Some species of triggers are distinguishable on sight, but I am not aware of any external differing characteristics by sex in Rhinecanthus. Bob Fenner>