Are Yellow Labs supposed to have Vertical Black Bars on it's body?

http://www.cichlid-forum.com/articles/l_caeruleus.php

Hi guys follow the link above to see the article of the history of the Yellow Lab. Also see the pics and read the writers comment at the end. Personally I have F1's from the Lions Cove variety. Besides the black on the fins the dominant males seem to have a little black patch on their foreheads but not the black barring as found in the pics here. Caeruleus are born with barring and sometimes when the fish is stressed you can see the barring becoming more prominent (when the fish are in prime condition the yellow causes the barring to "hide in the background" making it difficult to see with the naked eye). The barring is only found on the body of the fish and not the head as is the case here and is not black but more of a light brownish colour on the fish with the darkest bars (the bars on some fish look like yellow but a different shade). Hope this helps.