Help with Phrasology required

[Deflare]

(Also posted in Zoology section)

I'm doing a report for my biology class about mechanisms of sex change, such as certian species of frog are capable of. However, I'm having difficulty finding resource materials, as I don't know the 'official' term for this type of sex change. Merely searching for 'sex change' brings in... interesting responses.

I would like to know the official, 'sciencey' term for naturally-occurring sex change, as well as advice on how to find more information for this topic.

Thank you.

[ERS]

I think you may be looking for the term:

"facultative sequential hermaphrodite"

a good example of this is Blueheaded wrasses (a fish)

hope this helps!
ERS

[Deflare]

Thank you; I believe that this will generate much more appropriate responses than my previous queries.