20-gallon corner fish tank:
Length: 16.25 inches (41.28 centimeters)
Width (along one of the corner sides): 12.25 inches (31.12 centimeters)
Height: 18 inches (45.72 centimeters)
30-gallon corner fish tank:
Length: 24 inches (60.96 centimeters)
Width (along one of the corner sides): 16 inches (40.64 centimeters)
Height: 20 inches (50.8 centimeters)
40-gallon corner fish tank:
Length: 32 inches (81.28 centimeters)
Width (along one of the corner sides): 20 inches (50.8 centimeters)
Height: 22 inches (55.88 centimeters)
90-gallon corner fish tank:
Length: 48 inches (121.92 centimeters)
Width (along one of the corner sides): 24 inches (60.96 centimeters)
Height: 26 inches (66.04 centimeters)
These dimensions are just a few examples and may vary slightly among different brands and models. It's always best to check the specific dimensions of the fish tank you are considering purchasing to ensure that it fits the available space in your home.