How long a fish can live out of water depends on the species of fish, as some fish can survive for up to a few days while others can only survive for minutes. The fish that can survive for a few days without water do so by breathing the air or by absorbing it through skin.Know More
Fish are able to swim and breathe underwater thanks to their intricate gill system. The gills have filters that remove the oxygen from the water that enters and then process the oxygen for use in the fish's system. Scientists believe that fish were found on the Earth approximately 1.7 million years ago and evolved from another species.
It is recommended that an owner of a pet fish not take their fish out of water ever unless transferring between two water areas because pet fish have a tendency to die quickly when left out of water. It is also inhumane to kill a fish by leaving it out of water to suffocate. Most scientists and veterinarians agree that a fish is dead after 10 minutes without gill movement.
Fish can swim for long periods of time, but whenever they get tired they will let themselves flow freely on a current in the water. This helps them avoid using too much energy and oxygen.Learn more about Fish
Fish live in almost every available body of water, including rivers, lakes, oceans and streams. The species of fish determines whether it lives in saltwater or freshwater. Fish also live at various water depths with some fish preferring deep water and others staying close to the surface.Full Answer >
Fish use their gills to breathe by extracting oxygen from the surrounding water. The oxygen that fish and other animals with gills use is bonded to hydrogen molecules and is dissolved in the water. Water molecules are composed of two parts hydrogen and one part oxygen.Full Answer >
The time between laying and hatching of fish eggs varies by the species of fish and the temperature of the water. Goldfish eggs hatch two to seven days after being laid. Rainbow trout eggs can take one to five months to hatch.Full Answer >
Fish lifespans can average anywhere from one year to 20 years. The lifespans of aquarium fish vary greatly depending on the species.Full Answer >