I think originally most all cichlids were classified under the genus 'Cichlasoma' and then slowly started to be separated into different genus groups after more study and research. Amphilophus is the correct genus for Uropthalmus (until they change it again lol). The species name Uropthalmus won't change. If you say Uropthalmus or 'Uro', everyone will know what you're talking about, you don't have to specify genus. Common names are Mayan Cichlid and False Red Terror. They're often confused with Amphilophus Festae although they are easy to distinguish from one another once you're familiar with them.