4. Puffer fish
You can also buy Puffer fish with a flexible budget ranging from $500 to $25. The most expensive Puffer aquarium fish will cost you approximately $460. The cheapest will cost you approximately $25. Puffer fish are popular because of a number of things i.e. their playful personalities and flexible price tag. You can also get puffer fish in many different colors. Puffer fish also come in many body varieties i.e. those that have burrs, spikes and spines on their bodies.