Bluegill vs tilapia in aquaponics when compared there’s very little between them. tilapia is a part of the cichlid family, while the bluegills are sunfish. They taste great in different ways. They are both hardy fish and easy to maintain, but it’s the tilapia fish that are still the best fish for aquaponics. Tilapia grow faster and are almost indestructible, making them ideal for beginners to aquaponics.