Background info:
I purchased two (last two in the tank) of these guys from PetSmart a while back (mid Feb.). Both had sunken bellies, but their coloring (olive) was very different from the senegalus I had purchased from a different PetSmart (very grey colored, not olive). I had a breeder net full of baby guppies, so I bought both, brought them home and kept them in with the guppies until there weren't any guppies left.
Are these just nicely colored senegalus or are they something else?