The same things that effect your breathing. Shortage of Oxygen caused by impurities (poisons) in its water (your air). Too much heat which reduces the amount of available oxygen. Stress, fright, flight etc. All the preceding will cause a form of panting (rapid breathing).
To determine if your fish is sleeping or dead, observe its breathing and movement. If the fish is still breathing and shows some movement, it is likely sleeping. However, if there is no movement and the fish is not breathing, it may be dead.
Fish breath underwater
As the temperature changed, the fish's breathing rate increased or decreased accordingly.
No reptiles are air breathing, cold blooded, egg laying animals. Fish are not air breathing.
Are you sure the fish is breathing? On most cases if the fish is upside down it means the fish is dead, but might also be that the fish is ill, so go to the vet! :)
The smaller the size of a tropical fish the faster their breathing rate will be. The smallest fish will have the fastest breathing rates.
Yes!!
gills
gill
You die dipshiz
death
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