[Paul G]

Looks like the Tarapoto/yellow morph.
Where did you get them from?
(I don't think its a pepperi morph...but I'm not as familiar with them.)

 

[Paul G]

Check these out:
Dendrobates.org - Ameerega bassleri
Ameerega pepperi | Understory Enterprises

 

[Paul G]

Ahh ok. I didn't know you were in Europe.

Well, I guess your question is kind of answered now.
Heres a little more locale info....
http://www.dendroboard.com/forum/ameerega/57621-ameerega-bassleri.html