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post #1 of 5 Old 09-27-2009, 07:17 PM Thread Starter
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Exclamation Problem with zebra danios

My zebra danios used to swim together nonstop but now they are still swimming nonstop but they are staying on oppisite sides of the tank and wont get near eachother. What happened and what can i do to fix it?

~Thomas214






In my 10 gallon tank:
  • 1 Red male Betta
  • 1 Otocinclus Catfish
In my 29 gallon tank:
  • 4 Zebra danios
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post #2 of 5 Old 09-29-2009, 03:15 PM
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Danios are shoaling fish, that is, they live in groups. When kept as only two, such fish sometimes develop different behaviours, aggression, etc. If you like the zebra danios and want to keep them, I would suggest adding a few more to create a small group (shoal) which would make them feel more comfortable. I realize you only have a 10g tank, but if you are regular in your weekly partial water change and don't overfeed, 3 more zebra danios will be OK. But that would be the limit in this tank. Danios are active swimmers, and a larger tank is worth considering.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 5 Old 10-02-2009, 07:35 PM Thread Starter
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Yeah i am planning on getting a 30 gallon. I went to buy more zebra danios yesterday but i also had my water tested and my ammonia was at 3 mg/L. I found out that the cause was that my tap water had high ammonia so now i let my water age 48 hours before putting it in the tank. I am going to buy more zebra danios once i get the ammonia under control. Also the ammonia doesnt seem to be affecting my fish cause they are all swimming happily. i already have my ammonia at 0.07 mg/L. I normaly do every 4 days a 20% water change but i have been doing daily 25% water changes to get the ammonia down.

~Thomas214






In my 10 gallon tank:
  • 1 Red male Betta
  • 1 Otocinclus Catfish
In my 29 gallon tank:
  • 4 Zebra danios

Last edited by Thomas214; 10-02-2009 at 07:39 PM.
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post #4 of 5 Old 10-03-2009, 10:45 AM
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Quote:
Originally Posted by Thomas214 View Post
Yeah i am planning on getting a 30 gallon. I went to buy more zebra danios yesterday but i also had my water tested and my ammonia was at 3 mg/L. I found out that the cause was that my tap water had high ammonia so now i let my water age 48 hours before putting it in the tank. I am going to buy more zebra danios once i get the ammonia under control. Also the ammonia doesnt seem to be affecting my fish cause they are all swimming happily. i already have my ammonia at 0.07 mg/L. I normaly do every 4 days a 20% water change but i have been doing daily 25% water changes to get the ammonia down.
Ammonia should never be present in an established aquarium; it is very stressful at low levels and highly toxic if it should rise. Once a tank is cycled, ammonia should always be zero when tested, always. The daily partial water change is what is keeping your fish alive; the presence of any ammonia probably explains the sudden behaviour change of your danios. Ammonia in your tap water can be dealt with by using a good water conditioner like Prime; it not only detoxifies chlorine and chloramine but also ammonia. Letting water sit 48 hours will not remove ammonia (or chloramine). And chloramine and ammonia are related. Use Prime as your conditioner and you'll be fine.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #5 of 5 Old 10-04-2009, 10:37 AM Thread Starter
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Next time i go to the LFS I will look for prime and if i see it i will buy it.

~Thomas214






In my 10 gallon tank:
  • 1 Red male Betta
  • 1 Otocinclus Catfish
In my 29 gallon tank:
  • 4 Zebra danios
Thomas214 is offline  
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