this is a "yellow convict" it is of the Cryptoheros genus, and it a "cousin" to the regular convicts
it is in fact Cryptoheros nanoluteus a completely different species. a convict cichlid is Cryptoheros nigrofasciatus. you can call it anything you want, including 'yellow convict' but that doesn't make it so. there are many species in the Cryptoheros genus ... that doesn't make them all cousins. please Google Cryptoheros nanoluteus and learn something about nomenclature.
my thoughts on guessing. if you have something to contribute in a post like this one looking for an ID, than by all means do so. but making wild guesses just makes no sense. shall i call the yellow fish in question a yellow tang, or perhaps Neolamprologus leleupi because they are yellow like the one in the picture? shall i call it a Geophagus steindachneri because it happens to have a 'hump'?
making a 'guess' should be based on some knowledge of the fish in question and those that might look like it. do some Googling BEFORE you post some off the wall guess and eliminate those species that clearly don't fit the profile of the picture which is posted.
ok, perhaps i've come across a little strong here ... i apologize to those i've miffed ... but i've been breeding cichlids for over 40 years and it really irks me when people toss around names of fish without having the slightest idea what they're talking about. nomenclature, identification and the like is a science not some vague look alike image.