How 2 tell sex in Dwarf puffers??

[PCDawg]

HOw do u tell the sex of a dwarf puffer?? There was a link to a site that tells u that a male has a stripe...but it seems hard to distinquish...is the stripe at the end of the tail??

I notice that some puffers underbody is yellowish..is that to tell the sex as well??

Just need 2 know so that i can pick up a few females for my tank..

Thanks!!

[RENEGADE]

this site had some pics
http://www.rr.iij4u.or.jp/~kohda/en/en-dwarfpuffer.htm

[Dangerdoll]

on the male, he will have a white/yellow belly with a brownish line going from his mouth to his tail, it should be fairly easy to see. Sometimes the line will be a little lighter but still evident that it's there. The female will have no markings whatsoever on her belly. It will just be the solid white/yellow color.

(EDIT: typo)