A 20cm spherical fish tank: The mouth diameter is about 13cm, the bottom diameter is about 10cm, the maximum diameter is about 20cm, and the height is about 16cm. It is suitable for raising 3 to 4 small goldfish.
25-inch spherical fish tank: mouth diameter about 17 CM, bottom diameter about 14 CM, maximum diameter about 25 CM, height about 19 CM, suitable for raising 4 to 6 small goldfish.
30-inch spherical fish tank: mouth diameter about 20.5 CM, bottom diameter about 15 CM, maximum diameter about 30 CM, height about 21 CM, suitable for raising 5 to 8 small fish.
35-inch spherical fish tank: mouth diameter about 22 CM, bottom diameter about 21 CM, maximum diameter about 35 CM, height about 26 CM, suitable for raising 6-10 goldfish.
40-inch spherical fish tank: mouth diameter about 23 CM, bottom diameter about 22 CM, maximum diameter about 40 CM, height about 26 CM, suitable for raising 10 to 16 small goldfish.
45-inch spherical fish tank: mouth diameter about 25 CM, bottom diameter about 45 CM, maximum diameter about 45 CM, height about 27 CM, suitable for raising 10 to 20 small goldfish.
50-inch Sphere Aquarium: Mouth Diameter Approx. 26 CM, Base Diameter Approx. 50 CM, Maximum Diameter Approx. 50 CM, Height Approx. 29 CM, Suitable for 16-30 Small Fish