Here are what some 2-3" juvies I had looked like.

and back before the latest nomenclature changes, labridens was broken down by color, into labridens blue, red, white, and yellow.
These have all been given their own separate species stars (Nosotros pame, tepee, etc, with yellow as the true labridens) whether most fish stores have caught up, or even bothered to, is another mater. There has also some hybridizing in nature, after a non-native Herichthyine was introduced.
Below is what used to be called "labridens blue"
juvie

adult

and another color variation I had years ago, and couldn't be sure of type (maybe pantostictus)