8. Trigger fish
If you happen to be an aquarist looking for aquarium fish costing less than $100, Trigger fish are an ideal aquarium fish type for you. When you compare with other fish in this list, they are reasonably priced. They are also beautiful and available in a wide variety of colors and physical features. The cheapest Trigger fish varieties i.e. Bluechin Trigger fish will cost you approximately $25. The most expensive trigger fish varieties i.e. Bluelined Trigger will cost you approximately $100. Regardless of the variety you choose, you will definitely get value for your money.