Kribs Genders? (with video)

Let me start off by saying that YES, I have read A LOT of information and viewed many photos on how to sex kribs (I try to do as much research as I can before I start bothering other members). But I always have the hardest time sexing certain fish (as those of you already know that have tried helping me sex my GBRs). For these Kribs, I tried basing it on the dorsal fin. From what I've seen, the male's dorsal fin will have color running all the way to the tip, whereas the female's will stop a bit before the end. However, on both of the fish, they seem to stop like photos I've seen of females but then there's a couple specks of color towards the tips so I'm confused. I'm fairly certain though that they're both the same gender because they look almost identical to me. At the LFS, they were so dull in color but then brightened up almost immediately after putting them in my tank so it was even harder to tell at the store. They have a 2-day exchange policy so I'd like to get this figured out before then. Any help is much appreciated ;D

 

both female I know how to sex them but I could be wrong its a bit dark in the vidoe so is hard to tell also how big are they overall I am sure there both female also males have a longer looking body while females are more stocky check out my album I have a male and female the female is the one with more colour on her stomach and the male os the one with the long dorsal fin

 

both female I know how to sex them but I could be wrong its a bit dark in the vidoe so is hard to tell also how big are they overall I am sure there both female also males have a longer looking body while females are more stocky check out my album I have a male and female the female is the one with more colour on her stomach and the male os the one with the long dorsal fin

I tried checking your gallery but didn't find any pictures of your kribs. Am I just doing something wrong? And do you suggest that I just return one of the kribs and wait until I find one that I can easily distinguish as male? Thanks kribensis keeper ;D

I don't know if this helps anymore but I took another video. I think it's so dark because my tank lights are really low wattage (just ordered new lights yesterday) and I'm shooting the video on a camera (don't own a camcorder). Sorry

 

in this pic the one at the front of the picture is male notice the lonfg body and long dorsal fin and the one further away is a female notice that she is smaller more stocky and has a really redpinky stomach and yes return one I would suggest the one that has less colour in video 2 and look in the tank where they sell the kribs and look for one the the charataristics of a male

 

Great. Thanks for the advice.