This is definitely not a Green Terror everyone. This fish could probably be a cross of a Green Terror and Blue Acara, but this is most definitely not a Green Terror. The scale pattern is different, no tail indicator and the mask is different than a Green Terror. I would strongly suspect Blue Acara or a mix with mostly Blue Acara. Additionally, yes, Blue Acaras can interbreed with Green Terrors, which is why they should not be kept together unless one is confident with different genders and sizes in an effort to prevent breeding. If a person has the resources and living quarters, let them breed if you want (although I strongly discourage), but do not let them out in the hobby because this can complicate and help destroy the hobby. If you let them breed, then you take care of the fry, and do not give them to pet stores because many stores are not responsible; they just want the money and could less about responsibility. Many people tend to experience difficulty identifying the differences of Green Terrors versus Blue Acaras, so please people, please keep them separate or ensure that they can not breed.