Aquarium Tank Size Calculator
Calculate the ideal aquarium tank size for your fish. Ensure proper water volume and dimensions for a healthy aquatic environment.
Tank Size Guidelines
| Fish Type | Minimum Tank | Gallons per Fish |
|---|---|---|
| Small tetras, rasboras | 10 gallons | 1-2 gal each |
| Guppies, mollies, platies | 10 gallons | 2-3 gal each |
| Goldfish (fancy) | 20 gallons | 10 gal each additional |
| Angelfish | 30 gallons | 10 gal each |
| Oscars, large cichlids | 75 gallons | 30+ gal each |
Is the 1 inch per gallon rule accurate?
No - this outdated rule does not account for fish body mass, waste production, or activity level. A 10-inch oscar produces far more waste than ten 1-inch neon tetras. Always research specific species requirements.
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