Life Expectancy of Aquarium Fish

The lifespan of an aquarium fish varies greatly depending on the species, ranging anywhere from one year to 20. As a general rule, fresh water fish tend to live longer than saltwater fish.

  1. Saltwater versus Freshwater

    • Generally, aquarists find it easier to recreate the natural environment of fresh water fish. Salt water fish require very specific conditions that are often difficult to maintain; this is why salt water fish often have short lifespans when kept in aquariums.

    Feeding and Cleaning

    • Needless to say, all aquarium fish will live longer when they receive the proper care. If you want to increase your fish̵7;s life span, follow its feeding and cleaning instructions carefully.

    Territorial Males

    • You should also be careful to keep males of the same species separated, as they can often be territorial and may injure or kill others.

    Common Fish Lifespans

    • Guppies usually only live for about a year. Bettas and Kissing Gourami will generally live for three to five years. Several species of tetras may live for as long as 10 years.

    Catfish and Goldfish

    • When put in the ideal environment, goldfish and catfish will sometimes survive for as long as 20 years.