How long do fish live up too?

The lifespan of fish varies greatly depending on the species. Here's a general overview:

Short-lived Fish:

* Tropical fish: Many popular aquarium fish, such as guppies and neon tetras, have lifespans of only a few years.

* Small, fast-growing species: Fish like sardines and herring typically live for a few years.

Medium-lived Fish:

* Bass, trout, and salmon: These fish can live for 5-10 years, sometimes longer in ideal conditions.

* Catfish: Some catfish species can live for 10-15 years.

* Goldfish: While often mistakenly believed to live for decades, goldfish typically live for 10-15 years, although some may reach 20-30 years in optimal conditions.

Long-lived Fish:

* Eels: Some eel species can live for over 100 years.

* Sharks: Different shark species have varying lifespans, but some can live for decades, with some reaching over 100 years.

* Koi: These large, ornamental carp can live for 50-100 years.

* Rockfish: Some rockfish species have been found to live for over 200 years.

* Greenland shark: This slow-moving shark is believed to be the longest-living vertebrate, with estimates suggesting lifespans exceeding 400 years.

Factors Affecting Lifespan:

* Species: As mentioned above, lifespan is primarily determined by the species.

* Environment: Water quality, food availability, temperature, and predator pressure all play a role.

* Stress: Stress caused by overcrowding, poor water conditions, or handling can shorten lifespan.

* Disease: Fish are susceptible to various diseases, which can shorten their lifespan.

It's important to remember that these are just general guidelines. The actual lifespan of any individual fish can vary depending on a variety of factors.