If it is outdoor fish farming, experienced friends will suggest using yellow sand tanks and crocks, which are more suitable for outdoor fish farming. However, it is worth noting that goldfish can't be kept in a small-mouth deep tank, because the small-mouth tank not only has a small contact area with air, which affects the oxygen content in the water, but also is difficult to get sunlight, which is not conducive to the photosynthesis of moss and green algae, resulting in insufficient oxygen, which makes goldfish easy to get sick during bacterial reproduction, and the health and ornamental value of goldfish disappear.
You can choose many fish tanks to raise goldfish, but you should also choose according to the actual situation. The most common choice is a transparent glass water tank, which can be equipped with a perfect filtration system to provide a beautiful environment for goldfish. Most importantly, this fish tank can not only meet the needs of aquatic life growth, but also facilitate people to appreciate the beauty of goldfish.