There is a red morph Panamius panamense, that was once considered part of the same genus as the convict (Amatitlania) so it wouldn't;t surprise me if someone called it a red convict in the same way nanolutius is sometimes called a yellow convict.
I had the red morph in the early 90s, and it has the same body shape as a convict.
Later in the 2000s I came across a different color morph of the species, not quite so red.
Here they are with fry, before breeding I had swordtails as dither fish, after the spawn, the swords needed to be removed or they'd have been killed.