Need Help With Harlequin Identification Please!

[rocknurworld2006]

Hi i need help in telling the difference between :

Trigonostigma espei
and
Trigonostigma heteromorpha

what are the differences between the two ??

how can i tell the two apart?

 

[Corleone]

Espei: http/www.fishprofiles.com/files/profiles/425.htm
Heteromorpha: http/www.fishprofiles.com/files/profiles/383.htm

I've been looking into both fish recently, so I've seen enough of them to have a good idea. Espei have a narrow black triangle that doesn't come to the bottom of their body, heteromorpha's follows the contours of the body. Around here, espei is usually sold under the name "narrow wedge harlequin"

 

[rocknurworld2006]

thanks alot