what if scenario

If you had an unlimited budget and wanted to set up your ideal dream tank what would it be and how would you do it? Would it be glass or acrylic, Reef tank or a large specialized predator tank? What kind of equipment would you want to set up on it, and most importantly what would your stocking be?

If you could keep a prehistoric species as a aquarium pet, what kind would you want to keep and what size tank do you think it would require? I'm a big fan of Dunkleosteus, but with it being around the size of a great white shark it would need 5-10 million gallons of water. A smaller option...

If you were limited to keeping a single species of fish (Anthias, angelfish, clownfish etc.) which would it be and why? For me I would go with Gobies, you get a lot of different colors, body types, and size range for them so keeping multiple in a tank would be okay if done right.