How many fish can I safely keep in a 12 gal tank?
Posted on July 31st, 2009 by admin
Fish
I am ready to populate my freshwater aquarium with fish, but I don’t want to over populate and crowd … Can anyone tell me how many fish I can safely keep in a 12 gal tank?
I am ready to populate my freshwater aquarium with fish, but I don’t want to over populate and crowd … Can anyone tell me how many fish I can safely keep in a 12 gal tank?
Thanks!
Filed under: Fish

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It really depends on the size of the fish, the dwelling levels of the fish and also waste output. Why don’t you have a look around the internet, find some fish you like and then try to work out a stocking list around that? is a good place to look for pictures of fish.
When you’ve worked out a stocking list, or you’ve found a couple of fish you think you’d like to have, feel free to email me and I can help you add or take away from your list.
Don’t follow the inch-per-gallon rule, it is rather outdated and generally does not work.
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1in of fish = 1gal of water This method is good for normal aquariums 35yr exp
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10 – 17 med/large fish ought do the trick
dependes what size fish ur gettin
if there really small u can have like 50 in a tank
with out a problem
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it will depend on the maximum growth of the fish you’re going to get. for a 12 gal tank, you shouldn’t purchase any fishes that exceeds 3” fully grown. you can probably put around 5 fishes that grows to be 3”, probably a dozen or so if the fishes only grow to be 1.5”. i own a 10gal with 4 cory catfishes, which grows out to be around 3” and 7 neon tetras, which grows to be 1.5” and they’re living nicely.
also make sure that you don’t mix south american/african, semi-aggressive fishes, community fishes in the same tank, i did that in my 29 gal tank and all hell broke loose, i had headless fishes floating every morning til i eventually had to buy a 10 gal tank.