the one on the right is more robust, pear shaped and a wee bit stockier so my guess would have been that one. in my defense i didnt read the thread when i typed my answer but just peeked and hehehe ............. anyhoooooo. I have a mantella that is very large and wide at the hips in comparison to the others who I think is a female. I am curious to see if any of the males try to whooooo her over. she is the biggest in the terrarium. i read somewhere that ebanuis are larger than betsileo (scratches head).