What species is this??

[Ilovecichlids]

The rocks in the back are already touching the glass in my tank from my yellow labs digging (good thing they never collapsed on them) . I have kribs and yellow labs in the same tank and it seems like they all like to dig. I'm always tempted to flatten out the sand but I figure it's their home and they are making it the way they like so I leave it alone.

 

[Ilovecichlids]

My pelco also moves the sand around a lot