Hard Water Mid-level fish - Tropical Fish Keeping - Aquarium fish care and resources
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  • 2 Post By jentralala
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post #1 of 6 Old 08-05-2013, 04:53 PM Thread Starter
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Hard Water Mid-level fish

Hello everyone! Wanted to see if any had any recommendations for mid-level fish that prefer water on the harder side (in terms of GH).

Last edited by PhatRam32; 08-05-2013 at 05:11 PM.
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post #2 of 6 Old 08-05-2013, 08:06 PM
hi there! what size tank have you got? any other fish in there?
my livebearers hang out in the middle of my tank a lot, and they are quite colorful.

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post #3 of 6 Old 08-05-2013, 09:10 PM Thread Starter
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20 gallon

1 dojo loach
1 pleco
1 zebra loach

2 danios
1 rainbow fish
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post #4 of 6 Old 08-05-2013, 09:15 PM
Sorry to tell you this, but you're going to need a bigger tank.
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post #5 of 6 Old 08-05-2013, 09:17 PM Thread Starter
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When I do, what livebearers or other fish does one recommend for those fish that prefer harder water.
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post #6 of 6 Old 08-05-2013, 09:33 PM
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At the moment, you're overstocked and have fish that aren't suited to your size tank :(

The Dojo and Zebra Loach are soft water fish, and the Dojo loach also gets quite large. They are also cooler water fish, prefering water colder than the other fish in your tank really like.

There's also the problem of the rainbow fish, they really do best in larger groups (thinking around 5 at the minimum) and are active swimmers. Most people recommend keeping them in a 55 gallon or larger, based on their active nature and their adult size.

It's a similar situation for your danios...these are active, shoaling fish. While they may have enough room in the 20 (not sure exactly on that), they do prefer larger groups (thinking 6 minimum here).

The zebra loach is also a shoaling fish.

Without proper schools and tank sizes, these fish will be under stress and more likely to have health issues and not live as long as they should. There is also the possibility of aggression resulting from being kept in improper numbers.

Personally, I recommend rehoming the majority of your fish, and getting some more suited to your tank size, such as male guppies (very colorful, fun fish that come in a whole slew of varieties).

Also, what type of pleco do you have? Many will quickly outgrow a 20 gallon tank, and with such a high bioload they can really limit the amount of other fish you can keep.
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