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Hi
Can someone please let me know why all of my fish are swimming at the top of the tank.
Hope someone has some answers as we have lost 4 fish in the last 3 days, but have only just noticed the swimming at the top.
this may not be connected.
thanks in advance
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chickadee

How long have you had your tank and have you done the Nitrogen Cycle on the tank?* http://www.fishlore.com/NitrogenCycle.htm

Do you have the testing equipment to do tests for ammonia, nitrites, and nitrates?*
If so can you give us the results of the tests?

How often do you do water changes and how much - 30% 40% 50%?*

What size is the tank?*

How many fish do you have in there and what kind?*

Are you running an airstone in the tank?*

What temperature do you keep the tank at?

What kind of filter do you have in the tank?

I know this is a lot to ask but we really do need the information to give you an intelligent answer.* In the meantime, I would do a large (75% water change) and start an airstone and airpump.* This will at least take care of the two main possible problems for a day.* (ammonia poisoning in an uncycled tank and oxygen starvation).* Also the temperature of the tank should be about 80 degrees for the health of the fish.

Rose

Richard

That's generally a good indicator there's not enough oxygen in the water.. either you don't have enough air going into the tank ( in which case you can adjust the airflow higher) or your air-pump is too small for the size of tank you have (in which case a bigger air-pump will be needed).. either way, it's a problem you'll have to deal with sooner than later to ensure healthy fish.