Used to have a 180 gallon tropical marine on a Tunze resevoir.. full coral ecosystem, ran itself. Wave machines triggered by light sensors and automated cooling.
Some of the fish in it were:
Twin spot wrass
Emperor angel
Copper band buterflies
Yellow tangs
Regal tangs
Man, I used to love that shit.. I'd take acid and just stare at it for hours! Sold up when I moved to Italy
