Why Do Fish Stay at Top of Tank?

Answer

Fish tend to stay at the top of a tank due to lack of enough oxygen. This is an indication that the fish are gasping for breath. Improving water circulation could solve this problem.
Q&A Related to "Why Do Fish Stay at Top of Tank"
It depends. One good reason is, there's not enough bacteria in the tank. You may need to buy a simple decoration that requires an air pump to blow bubbles in it. It looks cool, but
http://wiki.answers.com/Q/Why_do_fishes_stay_at_th...
The water's pH is a level of its acidity on a 0-14.0 scale. 7.0, the center of the scale, is considered neutral, which is the typical pH level found in most freshwater aquariums.
http://www.ehow.com/about_6369271_do-tanks-high-ph...
I agree with Carol, you need an airstone, the poor guys are starving for air. Nonetheless, I have to ask, how are they swimming? is it in circles or across the aquarium? If it is
http://answers.yahoo.com/question/index?qid=201008...
They may be hungry , or you may have high ammonia or nitrate levels. Do they
http://www.chacha.com/question/why-do-fish-swim-at...
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