need id of shell dwellers and genders of them

[meelimatt]

Hi
I have rescued these shell dwellers from my local fish shop and they had no idea what species they were or gender as they came in a bag full of kribensis. I have believed when I saw them that they might be neolamprologus meeli but I now have a small hunch that they could be Lepidiolamprologus hecqui. Also I have been trying to work out if they are a pair as I would like to breed them. Here are a few photos of them.
Thanks

 

[OB Guy]

I'm not sure what you've got there. Hopefully someone else can tell. Welcome to the forum.