easy 10 pts for a true answer...?

Question

how many small fish (smaller than 3in in length) can be in one 20 gal tank????

Answer 1

It depends on alot.

What kind of fish are you looking at getting? If you're getting peaceful or schooling fish like tetras and guppies and that sort, you can put quite a few of them in there. If you're getting some of the more agressive ones, like the smaller cichlids or barbs, you'll want to put fewer in.

What kind of decoration are you having in the tank? If you're having alot of plants/decoration that will break up the fishes line of site, you can put more in, as they won't be as agressive or territorial towards eachother. It will also give them more places to hide. Less decoration means the opposite.

What kind of filtration do you have? If you just have a basic undergravel or something like the whisper filter that hang on the back, you will have to limit the numbers of fish. If you want to spend a little more money and get a canister filter, or a wet/dry filter, or some of the other higher priced filter types, you can put more fish in.

Over all, with just a basic tank with normal filters and medium to dense decorations, I would say you could put 15to 30 fish in the tank. Figure about 30 to 60 inches worth of fish. I would recommend staying in the lower end of that range unless you have some of the more expensive filters, or want to do water changes more often.

Answer 2

There is no easy answer to that.

The most common and well known method, is one inch per gallon. This is good as a rough estimate, but not as a hardfast rule. Stocking a tank with 10 inches of a small fish like a neon tetra is a lot different than stocking it with 10 inches of a larger fish like a goldfish. Larger fish produce more waste, therefore need more water volume to stay healthy.

Also, the full adult size of the fish needs to be taken into account. You can buy a 1 inch oscar, but that is a lot different than the 12 inches it will become when fully grown.

Another method is using the surface area of the tank. Surface area of the tank directly determines the rate of oxygen exchange (how much of the water is exposed to oxygen). A tall thin aquarium has a lot less surface area than a short, long or wide aquarium. The calculation method for surface area is width of the tank times the length of the tank. The theory is, you can have one inch of fish for every 12 square inches of surface area. Again, this does not take into account the size and shape of the fish, so this method is also flawed.

The easiest method is using the 1 inch per gallon method. There are a couple of factors that you need to consider before using this method, however. Any rocks, gravel, or decorations are going to take away from the "usable" gallons in the aquarium, so these need to be subtracted. The size and shape of the fish you are planning on putting into the tank, as well as the adult size of the fish also needs to be taken into account before you stock the tank.

I hope this helps answer your question.

Answer 3

10

Answer 4

It depends on the type of fish. Goldfish, for example, can live together in large quantities in small spaces. This is not preferable, but it is possible. Tropical fish, however, are usually more delicate and often need a little more space. Also, bettas (siamese fighting fish) can only be one to a tank no matter how big the tank is.

Answer 5

THere is absolutely no answer to your question unless you post dimensions, filtration, the TYPE OF FISH YOU WANT, and the like. '

Throw the one inch per gallon rule out of the window, it's one of the most pathetic excuses for a rule in the fish hobby that i've seen. The only thing it might work for are guppies or white clouds..and that's about it.

If you really want to know how many fish you can keep do your research nd don't rely on your wits and stupid rules that were made up how many years ago.

Answer 6

it really depends how big they are, but usually its about 1 1/2 inch of fish per every gallon of water, and you waould want to go with half of that so they are prosperous and not just alive. and it also depends on what yur filtration is like and how many water changes you do , and what kind of fish you have . also goldfish need more than one gallon of water per fish, more like two ,so it would be even less goldfish

Answer 7

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Answer 8

well............the average fish is 1 and a half inches. I have read that its supposed to be 1 gallon per fish. but since they are three inches , I would not put anymore than 12

Answer 9

of u want ur fishes to grow big n fatonly 2
if u want them to stay small then probably like 9-10

Answer 10

about 10 goldfish sizes. and im talking about comet. if you want tiny tetra blues, they are about 1 cm, they fit in up to 40.