Andinoacara rivulatus is a larger cichlid from South America. While usually seen for sale under the name "Green Terror", A. rivulatus is technically the Gold Saum Cichlid, with A. stalsbergi being the "True" green terror. These cichlids are aggressive (as their name would suggest) and reach about 1' in length, maximum. Good tankmates include large, robust schoolers such as silver dollars and larger barbs.
These are young adults, around 3-4.5" long.