pic one does not look like a yellow lab, due to mouth positioning,
pic two shows th proper colouration of a lions copve labidochromis caeruleus but i'm still not happy with the mouth looks more like a metraclima
pic 3 def not a lab. been searching but can't id as yet.
Where did you get the fish?
What were they labelled as and was there more than one species in the tank?
Central Americans; once they pop they don't stop!