The Semi-aggressive Arowana fish are potent swimmers constructed for their native South American Amazon river. These modern, silver fish are streamlined, carnivorous predators that will mature approximately 4 feet in duration if presented more than enough space. Their muscular bodies element unique “drawbridge” formed mouths and very small tailfins. Stingrays https://pearlaquatics.my/how-does-an-aquarist-maintain-their-aquarium-tank-fish-pond/