Breathe Deeply
Posted by giannis on November 19, 2003
Q: i have two goldfishes and especially at night time they go to the surface of the tank, does this mean that they need more oxygen? is it normal? thank you
A: Goldfish have the ability to supplement their oxygen needs by gulping air at the surface. This strategy works well for some fish living in waters that are not always adequately oxygenated - this will get them past those times when other fish might not survive.
Yes, I think your fish are in need of more oxygen. Your easiest remedy would probably be to provide more water - larger tank. An inch of fish for a gallon of water is a good rule of thumb, and keep in mind too that the warmer the water, the greater their oxygen needs. Hope this helps.
John Wiessinger ( November 20, 2003)