The second most expensive aquarium fish with a varying price tag depending on the species is the Angelfish. You can decide to settle for this fish if you are not willing to spend $80,000 to buy the platinum Arowana. The most rare angle fish (the clarion) costs approximately $3,000. The most common Angelfish species cost approximately $30. Angelfish are popular aquarium fish because of their beauty. The most common types/examples of Angelfish include coral beauty Angel ($30) and scribbled large Angel fish ($600).