Fish lifespans can average anywhere from one year to 20 years. The lifespans of aquarium fish vary greatly depending on the species.Continue Reading
Usually, smaller fish have shorter lives. For example, bettas live for an average of two years, and killifish may only live for a year. On the other hand, larger fish lead longer lives. Loaches can live 10 years or longer. Goldfish vary in size depending on their habitat, but they can live for decades.
Most domestic fish do not live as long as they could. Improper care and poor environment usually lead to early death in many species. Although goldfish can live 20 years or longer, many fail to last a single year. Pet owners can increase the lifespans of their fish if they feed them properly and make sure their tanks stay clean. Tank size also plays an important role in lifespan. For example, goldfish do not do well in small tanks.Learn more about Fish
To care for a Betta fish, a person will need to be able to create a proper living environment for the fish, feed the fish appropriately and ensure that all male Betta fish are kept away from other Betta fish (the males are oftenÂ aggressive).Â Betta fish that are properly cared for can live anywhere from 2 to 4 years.Full Answer >
One species of anglerfish, the monkfish, may live more than 20 years. Anglerfish are known for their disproportionately large heads that comprise the bulk of their size. Many anglerfish species feature at least one long, worm-shaped appendage that functions as a lure to entice prey.Full Answer >
According to About.com, Siamese fighting fish, also known as Bettas, typically live between two and three years. Natives of shallow waters in Thailand, Indonesia and other parts of Southeast Asia, Bettas are popular aquarium fish notable for their vivid coloring, long fins and aggressive temperament.Full Answer >
Over the years, barracudas have adapted to have a sleek, torpedo shaped body that allows them move easily through the water to hunt with razor sharp teeth. The barracuda has been in existence for 50 million years.Full Answer >