the spot on the tail is large. on festae it is small and coveres just the top part of the tail base.
i thought mine was a festae too but i was proved wrong. mine is 10" and a beautifully coloured mayan. so theres no doubt people will love them! and they dont grow as large and aggressive as red terrors so in some way its better
and finaly the first two stripes join to form a Y shape and not just come close as stripes
either way they are nice looking fish if i was in the US i would want some =)