Can goldfish and tetra go in same fishbowl?

Goldfish and tetras are not suitable to be kept in a fishbowl together. Fishbowls are generally too small to provide adequate space for either species, and they lack essential filtration and aeration. Additionally, goldfish are coldwater fish, while tetras are tropical fish, so their ideal water temperatures differ. Keeping these two species together in a fishbowl can lead to overcrowding, water quality issues, and potential aggression between the fish.