IME Festae are much brighter colored than mayans and they also get much larger. The red terror will display more of a bright red and yellow while the urophthalmus is more dark red or maroon color. Funny you should bring this up I saw a mislabled urophthalmus at a LFS yesterday. Poor fish had HITH and lost vision in one eye. Or at least it appeared that way. I have only seen adults, I dont know what the juveniles look like. Is that color in the pic you posted the actual color? if it is you may not really be able to tell until adulthood.