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Old 01-19-2017, 09:21 PM   #1
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Schooling fish

My tank is a 20 gallon long and I currently have 6 cardinal tetras, 4 lemon tetras, 2 Celebes rainbows, a horseface loach, and an otocinclus. My question is, I know lemon tetras and Celebes rainbows should be in a school so should I get more lemon tetras and more Celebes rainbows or will they be ok?
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Old 01-19-2017, 11:20 PM   #2
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Yes, you should up the numbers of lemons and celebs to 6 minimum.
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Old 01-19-2017, 11:34 PM   #3
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Schooling fish

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Yes, you should up the numbers of lemons and celebs to 6 minimum.


But I'm already at 17 fish in a 20 gallon. If I add 2 more lemon tetras and 3 or 4 more Celebes rainbows, that will bring me to 22 or 23 fish and I will be overstocked at that point and I'm trying to avoid that.
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Old 01-19-2017, 11:43 PM   #4
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Unfortunately, otocinclus and your loach should also be in groups. Otocinclus should be in schools of at least 6. You can get by with 3 loaches.
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Old 01-20-2017, 12:30 AM   #5
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Schooling fish

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But I'm already at 17 fish in a 20 gallon. If I add 2 more lemon tetras and 3 or 4 more Celebes rainbows, that will bring me to 22 or 23 fish and I will be overstocked at that point and I'm trying to avoid that.


I agree, in proper numbers that's too many fish for the tank... I was answering your question as to the number of Lemons and Celebes.



Knowing that you can not keep this many different species in the proper numbers means that you need to decide which species you will keep (in the proper number) to prevent overstocking.



Truthfully, my own personal preference is one larger group of a single species - I think it is more natural and you witness the fish in a more comfortable setting.



Certainly there are fish that can be kept as singles or pairs and would compliment a nice single species shoal in a 20 long. Apistogramma comes to mind, you could have a single or pair of apistos plus 8-9 Cardinals.... this is just an example.



You really need to decide which species you like and keep that fish in the proper numbers - tough choices YES - prudent YES.



Good luck and happy fish keeping!
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Old 01-20-2017, 11:38 PM   #6
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Anyone else have thoughts/opinions?
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Old 01-21-2017, 01:58 AM   #7
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I agree with SherLar and thegundog
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