Sexing Altolamprologus sp. "Compressiceps Shell"

[ibr3ak]

...or any other Altolamprologus for that matter.

I've googled for a while now and came up pretty much empty, other than the usual "males are larger than females; males grow longer fins as adults" I can't find anything else.

Is there a sure way to sex a juvenile a. compressicep?

 

[jpappy789]

Tangs aren't very easy to sex in general from what I have seen other than by size.