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Discus (Symphysodon sp) are a large fish requiring extremely good water of specific parameters. They also need regular water changes of at least 10% each day and 70% once a week in order to thrive. The calculation for all Freshwater Fish is around 1 gal of water (4.5ltrs) is required per 1 inch of fish (2.5cm). A well grown Discus can get to the size of a dinner plate but more commonly they reach the size of a DVD or CD. I have always allowed 10gals per adult Discus but have been criticised for overcrowding.

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15y ago
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13y ago

it matters how well you take care of them.

that said, if you take really good care of them, they could grow a foot!

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9y ago

How long do discuss fish live

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Q: How big of a fish tank does a discus need?
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How long is a big fish tank?

A big fish tank is as long as its been built. 'Big' is a subjective term. Ask yourself, how long is a big fish tank, to me? That is where your answer lies. For me, a 'big' fish tank is anything over at or over 4 feet long.


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separate them If they are in the same tank, you can't; you need to put the ones that eat the smaller ones in a different tank.


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Can fish drown in a fish tank?

Yes, but depending on how big you or the tank is.


How big of a fish tank do you need?

not very big, in fact only about 15cm deep, and 7cm wide, because even if you get them a big tank, they will only stay in that size area


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A fish tank looks like a big round bowl or a big rectangle


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Can you drown in a fish tank?

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Is a turtle tank technically the same as a fish tank?

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