This thread will probably get moved, as pelvicachromis pulcher are African riverine cichlids. The albinos are just a color morph of standard pulchers...nothing different from a behavioral standpoint. They will be fine in a community tank with tetras and guppies.
They can get nasty when they spawn. My pairs used to keep a whole group of adult severums and silver dollars at bay with ease. But, I've never seen them really do any damage. They're big bluffers...make a big show of the chase. I've never seen them bother small fish.