Keeping Goldfish In A Bowl Without Filter. If you aren’t performing frequent enough water changes, then waste products are building up in the water and can make your goldfish sick. However, good quality of life should not be expected.
It also makes things easier on you since the water will remain cleaner, and the tank will be more attractive. This fish can be kept in a bowl with no filter or pump. However, keeping your goldfish in a bowl will probably shorten its lifespan.