similis

Hi can anyone help me in identifying these chiclids, need to know if they are Neolamprologus multifasciatus or simili ?? As they seems to be juvenile's I am unable to make out the difference. As these came in just today from the breeder, they are getting quarantined for the next 15 days before...

I plan on breeding shelldwellers pretty soon, (specifically n. similis) in a 20 long. I have a general idea of their care and breeding, and I just had some questions- -can they be on bare bottom or do they need sand? -do I need to move fry to a growout? -can I grow fry out in a 10 gallon...