In any Amphilophus spawn there will be many variations. I have had barred Amphilphus spawn, and end up with individual fry that were pink, yellow and unbarred, spotted and mottled, some with black spots, and pointed snouts, some not.
And when you consider that many older non-fry specimens bodies can be influenced by the hierarchal status of their current situation, and even that shape type might change when put in a different situation, or age.
Individuals from around the islands of the Solentiname, may be quite different in appearance from those almost 80 miles to the north in lake NIcaragua, near Zapotera island.
So if a specimen you have, may be from Lago Arenal in Costa Rica, it could be light years apart from one if from Nicaragua.