How Many Fish Can You Fit in Your Freshwater Aquarium?
Note: This is way too many fish for 1 bowl.
There isn’t always 1 right answer when it comes to determining how many fish are appropriate for your aquarium. However there is a rule-of-thumb way of getting an estimate.
Goldfish:
For each inch of fish you will need 2 gallons of water.
Example: You have 3 goldfish, all measuring out to 2 inches each. So 6 inches of fish will require approximately 12 gallons.
Tropical Non-aggressive:
Each inch of fish requires only 1 gallon of water.
Example: You have 3 male guppies at about 1 inch each for a total of 3 inches. You’ll need 3 gallons of water.
Semi-aggressive Tropical:
Aggressive fish can be a little tricky since not all fish will get along, they may require more space, so ask your local fish store for specific setups.
However, they tend to follow the same rules as the non-aggressive tropical fish, and require about 1 gallon per inch of fish.
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