they are convicts, they're not similar to frontosas at all. Convicts are american and frontosas are african.
the ones with nuchal humps (lumpy heads) are males and the females are the ones with orange and red on the. Males will not get the orange/red on them and they tend to have longer dorsal fins than the females. One of the easiest fish to sex and the easiest fish to breed.
1 looks like an Psuedotropheus Sp. Acei
2 = Labidochromis caeruleus yellow Lab" 3,4 & 5 = O.B.peacocks (hybrid) see link http://www.cichlid-forum.com/articles/ob_peacock.php
10 & 11 = The white one is a Pseudotropheus socolofi albino
The convicts with orange are probably female the others look male
13 looks like an Pseudotropheus Greshakei ice Blue Zebra"