I prefer silver arowanas. I currently have a young silver and a young Leichhardti. The silver is easier to feed eats everything that hits the water the Leichhardti is fussier, shyer and less owner responsive in general. Silvers are also far less expensive grow larger and are more eligent. If silvers were difficult to obtain and cost 4 times as much or were banned in the US they would be the fish everyone wants. Even blacks, virtually the same fish, twice the price, less color. Just my .02 on the aros game, everyone wants to out do the other guy.