The top fish isn't Archocentrus centrarchus, body shape and striping is off, and it lacks the black spot on the gill plate. I'd say it's a very bland rainbow cichlid, Herotilapia multispinosa.
Hmm. I don't think the bottom one is beat up, I believe it's going through a color change. That could make it a Paratheraps fenestratus "pink", or some low quality hybrid with Amp. and vieja blood.
Posting up a couple more photos would help, it can be tough to ID just off one shot.