pearly ZZ / kamfa attributes b y finnage/ and will have potential when it is 4 + inches for hump..feed good diet, give good lighting, and be obsessive on water condition. Its very simple but its a must..I am learning too.
Oh read on the 4 rules that was posted as a thread in the past here in the hybrid section and also the sexing method if you really want to know hump..
Best of wishes to you and your friend heheh