Most expensive fish on average?

[Deadeye]

If you play your cards right, saltwater doesn’t have to be too expensive. It’s only as much as you want to pay…but of course buying 20-50 dollar corals vs 200-500 corals (I don’t get the acropora craze) will make a huge difference in color. This was all done using rather cheap corals. Only one coral in the tank costed over $100 (can you guess which?):

 

[Hybridfish7]

For freshwater, koi. For saltwater, deep water reef fish.