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post #1 of 10 (permalink) Old 08-08-2012, 04:32 PM Thread Starter
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New tank!

Me and my wife just purchased a 20 gallon long tank. I just wanted to see yalls opinions on a good schooling fish and how many.
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post #2 of 10 (permalink) Old 08-08-2012, 04:44 PM
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I've always loved cardinals. I'd say 10 would be very comfortable in a 20 long.

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post #3 of 10 (permalink) Old 08-08-2012, 04:51 PM
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im looking to get a large school for my 55g. i've read cardinals, neons, harlequin rasboras, rummy nose tetras, bloodfin tetras, zebra danios all school well. From what i've read, rummy nose and harlequins school the best?

the thing is.. for me.. neons and cardinals are the most common by me and the cheapest. but i heard they aren't as hardy as the other ones i listed and most will die in a newly cycled tank?
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post #4 of 10 (permalink) Old 08-08-2012, 05:07 PM
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Cardinals and neons have bad reputations...I have 3 neons in a newly started cherry shrimp tank and they're doing great - I started with 4. I had 8 cardinals in my 55, and after a move, I'm down to 4, but they survived 2 moves before that and a couple rounds of ich!

Just acclimate slowly, but be ready for losses. They can be delicate, but my 4 cardinals are crazy tough now!

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post #5 of 10 (permalink) Old 08-08-2012, 05:13 PM Thread Starter
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I like the neons and cardinals but my wife has 8 of them and they just stay at the bottom. Looking for something maybe a little more active
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post #6 of 10 (permalink) Old 08-08-2012, 05:20 PM
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Danios in general are very active swimmers. I wouldn't get giant danios though since they are notorious jumpers and they may get too big for your 20.

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post #7 of 10 (permalink) Old 08-08-2012, 11:37 PM
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What else did you have in mind for this tank?
Rocks, driftwood?
What are the water parameters? GH, KH, pH, TDS
Other fish?

In a 20 long I have usually aimed more for bottom fish, since it really is a bottom tank. Hillstream Loaches, freshwater Gobies and White Cloud Minnows.
You could run it not so intensely river and go with WCM and some of the smaller Cories.
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post #8 of 10 (permalink) Old 08-08-2012, 11:44 PM
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I have 9 harlequin rasboras and they never stand still. (the 10th one went carpet surfing). Really hardy fish.

Of the 10 cardinals, I'm down to a robust 4 (after the first week of losses). They swim both with and without the rasboras. Planning on getting more cardinals in the next few weeks. The biggest fish survived; the smallest ones died.

Initially, the fish were always in schools. As the plants have been growing, they've gotten much more comfortable and don't spend nearly as much time is a full school.

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post #9 of 10 (permalink) Old 08-08-2012, 11:57 PM Thread Starter
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Diana the plans for the tank idk I just got. I will have drift wood, there is no fish in the tank like I said its brand new. I wanted a type of schooling fish but now that you say the tank is a bottom dweller tank you got my mind wondering
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post #10 of 10 (permalink) Old 08-11-2012, 02:51 AM Thread Starter
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Well I going to do 5 white cloud minnows and 5 rasboras and maybe a gbr
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