Geez, after reading through this thread I can see why there is still so much confusion regarding greenterrors
The newly described Andinoacara stalsbergi has a different scale coloration pattern. It not common in the hobby and often goes by the common name of 'silversaum' or 'silver seam' ( as well as also being called the 'real' or 'true green terror'). It is easily distinguished from Andinoacara sp. "gold saum" based on it's much different scale pattern, not on the coloration of it's fin trim.
A. sp. "goldsaum" , comes in either gold or white trim. Both fin trim colors exist with in the population, in their native range. A. sp. 'goldsaum' is the popular, and very common green terror in the hobby, and depending on the color of it's fin trim , it is sometimes refferred to as a 'goldsaum' or a 'whitesaum'. When a 'whitesaum' is refferred to as a 'silver saum' it get's confused with A. stalbergi; a fish that is easily distinguished by it's much different scale coloration pattern.
Andinoacara sp. "goldsaum" is rather difficult to distinguish from Andinoacara rivulatus. A. rivulatus is extremely rare in the hobby and has a different collection point then A. sp. 'goldsaum'. It has yet to be determined wether or not they are in fact seperate species or simply regional variants ( though, given the recent trends of splitting species up, based on very small differences, there is probably little doubt that both fishes will end up being classified as sperate species).