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i have 2 parrot fish and 2 other types of fish a bit smaller so if you have around 5 big fish like the size of parrot fish that sould be plenty and if you have fish the size of a guppy or a bit bigger you should have at the most 25

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15y ago
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4mo ago

In a 20 gallon aquarium, the general recommendation is to have 1 inch of fish per gallon of water. However, this rule is a rough guideline and other factors like fish species, behavior, and waste production should also be considered. It's best to research the specific needs of the fish you plan to keep and consider their adult size and compatibility before stocking the aquarium.

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14y ago

It depends on the type of fish you are putting in the 20 Liter (5 gallon) tank. Some fish are very small and don't grow a lot so you could put a lot of them in there but you couldn't put more then one or two goldfish in because they are dirty fish and they can outgrow the fish tank.

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9y ago

The answer varies on who you ask. Before you(or whomever else reading my answer) go off buying fish, do your research on the spacial needs on the fish you're interested in. Keep in mind that the ten-gallons-per-one-inch-of-fish rule doesn't always apply. Tetras for example. A 20 gallon is a small, large tank. It is perfect for countless small fish(1"-3"), or just one big fish(4"-8").


My tank is composed of 12 Bronze Corydoras, 6 Platys(always with more on the way), and two guppies. And my tank is nowhere near overpopulated. https://youtu.be/qmpt3xow6CY


A Fightn' Fish Fact- Inbreeding is bad for all fish species. It may cause sick, distorted and poorly formed young. So to avoid Inbreeding, buy different variants of each species, or simply buy specimens from different stores.

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Q: How many fish can you have in a 20 gallon aquarium?
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What is the best kind of fish for 30 gallon aquarium?

Some good fish options for a 30-gallon aquarium include tetras, guppies, mollies, danios, or dwarf cichlids. It's important to consider the fish compatibility, water parameters, and tank decorations when choosing the best fish for your aquarium.


What does a fifty five gallon aquarium weigh when filled?

A 55-gallon aquarium typically weighs around 625 pounds (283 kg) when filled with water. This weight can vary depending on the specific dimensions and materials of the aquarium. It is important to safely support the weight of the aquarium when setting it up.


How many fish can you put in a fish tank?

The number of fish that can be put in a fish tank depends on the size of the tank, the species of fish, and their compatibility. As a general guideline, a good rule of thumb is to allow one inch of fish per gallon of water. It's important to consider factors like fish size, territorial behavior, and waste production to ensure a healthy and balanced aquarium environment.


How many fish can you put in a 2 gallon aquarium?

It is generally recommended to have 1 inch of fish per gallon of water in the aquarium, so for a 2-gallon aquarium, you should only keep 2 inches of fish. It is important to consider the adult size of the fish and their specific needs when determining the stocking level for the aquarium.


How many fish can you put into a 50 gallon aquarium?

The general rule is 1 inch of fish per gallon of water at full stocking levels. So that would be 36 very small 1" fish, or 15 or so 2" fish. Make sure you stock the aquarium slowly, over a number of months. The 1 inch rule is an old rule of thumb that is not useful to say the least. It depends on species, different fish will have a different impact on the system's bioload. some fish natural produce more waster than others. to simply say a 36 gallon aquarium will be able to hold a 30 inch Arowana is just not practical. generally, small schooling fish such as barbs and tetras can be stocked at higher densities. larger aquatic predators such as Oscars or arowana should be kept in fewer quantities. Think more about the bioload and what the filtration can handle

Related questions

What is compatible with a 5'' green terror in a 20 gallon tank?

Not a lot. A twenty gallon aquarium is too small for a 5" fish to begin with.


How many fish in a 20 gallon tank?

Most Aquarist use this rule of thumb to put fish in an aquarium, 5 inches of adult fish for every gallon of water in the tank. The five inches only takes in the head and body. Do not use the tail in the measurement.


How many quarts dose the fish tank hold?

10 qts 1 gallon = 4 quarts 1 quart = 0.25 gallon


Ihsan purchased a 5-gallon aquarium for his bedroom. To fill the aquarium with water, he uses a container with a capacity of 1 quart. How many times will Ihsan fill and empty the container before the aquarium is full?

well 4 quarts is one gallon, and he has 5 gallons to fill. 4 x 5 is 20, so he will have to fill it 20 times.


How many fish and inverts can you keep in a 20 gallon saltwater reef aquarium?

This is the rule I use for my 15 gallon saltwater tank. Group A: Basslets, Gobies, and Jawfish. Group B: Firefish, Cardinal fish, Blennies, Chromis(pairs), Anthias, and Clownfish(pairs). You can pick 2 fish from Group A(can be different species, it should be different species) and 2 fish of 1 species from Group B. Plus you can add up to 3 damsels or snails or shrimp or cleaning Seastar.


What size should your tank be for 4 common goldfish?

probably a 20 gallon aquarium


What size aquarium does a baby PAINT turtle need?

10 gallon if its only 2 inches and a 20 gallon for 4 inches


What is the best kind of fish for 30 gallon aquarium?

Some good fish options for a 30-gallon aquarium include tetras, guppies, mollies, danios, or dwarf cichlids. It's important to consider the fish compatibility, water parameters, and tank decorations when choosing the best fish for your aquarium.


How expensive are aquarium fish?

Aquarium fish prices vary wildly depending on the type of fish. Typically however, most freswhater tropicals will be in the $2-8 range, and most marine fish are in the $20-50 range. However, there are many many exceptions to this, and aquarium fish can cost upwards of $2000 if they are rare and wild caught, or a new form of koi, etc. Some koi can sell for over $100000 USD per fish.


What kind of animals and fish do they have at the Newport Aquarium?

There are many types of fish and animals at the Newport Aquarium. They have 20 species of shark including tigers, black tips and white tips. They also have jellyfish, frogs, penguin and numerous fish including stonefish, lionfish and catfish.


What do you need for goldfish tank?

To have one fancy goldfish you need to start off with at least a 20 gallon aquarium kit. This kit will come with a filter, filter media, the tank, and likely some decor. You also need to buy a bottle of water conditioner, and some fish food so you can begin cycle your aquarium to prepare it for the fish.


Can a Chinese water dragon baby temporarily be in a 20 gallon aquarium?

Yes, as long as it is temporary it will be fine.