You may have wondered how long does a fish live, what is its average life in an aquarium and the truth is that, for sure, I could not tell you an exact number of years because fish can live from a few hours to a few years, often depending on the fish's own resistance, how old it is and also how he is raised.
When they have in fish tanks, not aquariums, the most professionals say they can last is 2-3 years because the fish can't hold on much longer Stress that live in it. Others say that, if well cared for, they can last for many years and accompany you throughout your life.
The truth is that the fish we buy are usually small in age (about 2 months old) so they will last at least a couple of years if we take good care of them. It also depends on the species you will get it to last longer or shorter. For example, the fish that are used for clean the windows, the cleaners, can last much longer than 2 years if they are well and do not get stressed, in addition to growing a lot.
Experts say that fish, with good constitution and well cared for (find out how long you can go without eating), they can live 10-15 years in aquariums (not in fish tanks) and they can even extend that age longer than a dog. But, as I said, it has to be an aquarium. very well cared for where nothing is missing.
An "guideline rule" tells us that the larger the average size of a species, greater longevity It has such a shape that the bigger it is, the more years it will live, although you have to take this into account for your aquarium, you will not want a fish that is too big because it can reach eat the other fish.
Factors that really lengthen (or shorten) life in aquariums and fish tanks
Habitat and space: In an aquarium with sufficient volume and adequate filtration, life expectancy is usually noticeably larger than in a fish tank. The extra space reduces the overcrowding stress and provides more stable water.
Water quality: keep ammonium and nitrites at 0 mg / L, low nitrates, a stable pH, and a temperature appropriate for each species are key. Analyzing the water periodically avoid lethal spikes. A properly sized and cycled filter is essential.
Temperature and oxygenation: The right temperature reduces the forced metabolism (avoiding accelerated aging). Good surface movement and/or live plants They promote gas exchange and oxygen availability.
Feeding: a varied and balanced diet high quality (according to herbivorous, omnivorous or carnivorous habits) and adjusted rations prevent obesity, nutritional deficiencies and contamination by remains.
Social compatibility: mix species with temperaments, very different sizes or needs cause stress and aggressionA tank with compatible populations lives longer and better.
How long do orange fish live?
Most of the fish that we buy in shops dedicated to the sale of pet animals are usually called orange fish, carp or goldfish. They are the most popular species and the one that we most frequently see in fish tanks and aquariums. However, they are not the oldest.
These fish are much more delicate and fragile than we think. That is why there are cases in which we buy one of these little animals and they survive for only a few months, and even a few days. It is true that this rule is not always fulfilled, since with the correct care, we can make the orange fish endure with us in 2 to 3 years.
It should be noted that these fish are raised in large ponds where they develop and grow rapidly, despite their young age. Therefore, all specimens found in aviaries and pet stores are very young.
Furthermore, within the family of ornamental carp, there are varieties famous for their high longevity in large aquariums, As the koi carp, which under optimal conditions can easily exceed a decade, and even approach ranges of 20-25 years in very well-kept facilities. Other varieties such as shubunkin They are also long-lived if maintenance is excellent and the tank is large.
How long does a clown fish live?
The clown fish they are one of the most attractive aquatic animals. Its striking orange and reddish color, combined with their White Stripes, make it unmistakable. It is true that within this group de peces, up to more than thirty species are housed.
In their natural habitat, these fish are found in warm waters of the Pacific Ocean, widely populated with coral reefs, accompanied by anemones, which offer them protection against possible predators at the same time that they provide various sources of food. In these circumstances, these animals live between two and fifteen years approximately, depending, yes, on the kind of and clownfish to which we refer.
Unlike other species de peces which have also been bred for life in captivity, clownfish do not require very tedious care, so they are a good option to incorporate into our aquarium, in which, if nothing strange happens and they are well cared for, we can enjoy of them since 5 to 10 yearsIn well-managed captivity it is common to remain in the high range, while in the wild some specimens reach figures of superior longevity due to the stability of the reef and the symbiosis with the anemones.
How long does a kite fish live?
The kite fish They are one of the best known small aquarium fish. Their wide variety of colors makes them very attractive animals, especially for the little ones in the house. In their favor, it should also be noted that they are very sociable, so they do not show problems when living with other species.
All these characteristics make the kite fish one of the most advisable fish for all those who are starting in this hobby. Moreover, it is an animal that does not need much care, despite belonging to the family of the kite fish or goldfish.
It is no wonder that these fish can have a life in captivity of 5 10 years, as long as they are properly cared for. In aquariums with good filtration and low charge density, their expectations grow significantly compared to fish tanks without thermal or biological control.
How long does a guppy fish live?
The guppy fish They are one of the varieties that breeders and fans are most passionate about. Within this species, we can find very different individuals from each other, in terms of color and morphology, hence its popularity.
They are animals that live in freshwater areas, mainly in those of low current such as rivers, lakes and ponds. In the natural environment, we find them in countries of Central America , the Trinidad, Barbados, Venezuela and the north of Brazil.
The characteristics that the water that houses these animals must have must be: temperature between 22 and 28 degrees, with 25 degrees being the most optimal; the pH has to be alkaline, and never below 6.5 or above 8. If we achieve all this, these fish will be able to live 2 years.
To get closer to your lifespan ceiling, you contribute quality food (specific flakes for viviparous fish, brine shrimp, daphnia, blanched vegetables) and prevents overpopulation. Control males with very large fins (more sensitive) and maintain a relationship 1 male for 2-3 females helps reduce stress.
Other common species: quick guide to indicative longevity
Then a useful reference to set realistic expectations (in well-maintained aquariums):
- Betta splendens: usually between 2-3 years, with specific cases that reach more if the water It is very stable and the feeding is optimal.
- Killis: annual species that usually live 1-2 years; some complete their life cycle in temporary ponds.
- Platys, mollies and swordtails: around to 5 years in correct conditions.
- Tetras and rasboras: frequently 3-5 years en mature aquariums and with appropriate parameters.
- Corydoras: peaceful catfish that can overcome the range of 5 years if the substrate is till and does not damage their chins.
- koi carp: very long-lived in ponds and large aquariums, with domestic records exceeding Two decades in very well-maintained systems.
- Shubunkin and other fantasy carp: With good space and rigorous care, they can approach to the upper range of the ornamental carp family.
- Clownfish and cometfish: usually in the range of 5-10 years in well-managed captivity.
How long does a fish live out of water?
One of the concerns that most affects breeders is the tiempo in which fish can stay alive out of water. And, contrary to what we think, these animals can survive for a certain amount of time outside of the aquatic environment depending on the conditions.
If, out of the water, the fish is in a place with room temperature If it is rather cold and placed on a surface that does not quickly absorb moisture, it can last a lifetime. up to almost 1 hour.
There are cases in which fish have jumped, as incredible as it may seem, from the fish tank or pond. If this happens, and we still find our fish alive, we must put it as quickly as possible in a container that has the same water than the fish tank or pond. Afterwards, we have to rinse it gently with the help of a cup, in order to remove any dust particles, etc., that have adhered to its skin. It is very important to keep in mind that we must not rub the fish firmly to avoid causing external injuries. After observing it for a few 24h Inside the container and having verified that it is okay, we will proceed to return it to the fish tank or pond.
How long does a fish live in the sea?
Within a marine ecosystem, there are countless species, many of them fish. Among the different species de peces There are multiple differences, and in the Life expectancy it was not going to be less.
Normally, fish that live in seas and oceans live longer than their companions that do the same in lakes and rivers. There are fish that barely live a year, while others live up to half a century. Exceptionally, sturgeons and groupers have been found with more than Age 100. But if we were to make an average of the life expectancy of marine fish, we would say that it is close to the 20 years.
If we want to know the age of a fish, there is a pretty reliable trick. Just like the rings drawn on tree trunks, if we look at the scales of a fish, they also draw a series of growth lines. Each of these lines reflects one year of the animal's age. To do this, it is necessary to use a magnifying glass of high magnification, since it is almost impossible to do so with the naked eye.
How long does a cold water fish live?
Coldwater fish include those that live in lakes, rivers, and all domestic fish bred for aquariums and fish tanks. There are many varieties, but unlike fish that live in marine waters, they usually live in less time.
If before we said that marine fish can reach a very high life expectancy, even reaching 20 years and much higher figures, cold water fish usually have a life span from two years to the 15 years.
We hope that with our article you already have a clearer idea of how long does a fish live and the life expectancy of these small (and not so small) fish that we usually have at home.
The rule of space, equipment, and stress: how to avoid premature deaths
A useful guideline in aquaristics is the well-known liter per centimeter rule: reserve approximately 1 liter of water for every centimeter of adult fish. This reference, although indicative, helps to size the tank and avoid ammonium spikes due to overload. It never hurts to add extra margin.
Suitable equipment: A filter with sufficient flow rate (and biological material) is essential for eliminate waste and sustain nitrifying bacteria. In tropical species, a thermostatic heater keeps the temperature stable. The lighting regulates the photoperiod, essential for plants and biological rhythms.
Weekly analytics: The aquarium is a closed system; it's a good idea to measure pH, KH, GH, ammonium, nitrites, and nitrates regularly. Correct in a timely manner. avoid crises that shorten the life of fish.
Live plants: In addition to beautifying, they favor the gas exchange and help stabilize the environment by consuming nitrates. They provide shelters that reduce the Stress between individuals.
Water changes: the waste decomposes and poison water if we don't renew it. Frequent partial changes (for example, 20% weekly) keep the environment safe for the fish.
Temperament, coexistence and diet: the invisible triangle of longevity
Character and hierarchies: There are peaceful fish and territorial ones. Even calm species can become aggressive when mature (e.g. certain cichlids or angelfish). The decoration should break lines of sight to mitigate conflicts.
Feeding rhythm: Slow eaters and slow eaters live together in the same tank voraciousIf the slow ones do not receive their ration, they become ill starvation, and the fast ones, by excess. Distribute the food in small doses and, if necessary, offer targeted foods to specific areas to ensure that everyone eats.
Smart hygiene: Do not overfeed (remove leftovers in minutes), clean the prefilter with aquarium water to preserve bacteria and siphon the substrate where they accumulate waste.
Light and ventilation: Although fish do not need direct sunlight, a regular photoperiod promotes growth. equilibriumAvoid direct sunlight, which heats and promotes algae. Ensures good oxygenation with superficial movement.
Ultra-short-lived cases and record-breaking species
It is worth remembering that not all species have the potential to live many years. The tiny Eviota sigillata It is one of the vertebrates with shorter life, with records of just 59 days. For its part, the African kili Nothobranchius eggersi stands out for its ultra-fast ripening, growing and reproducing in weeks and completing its life cycle in 9-12 monthsAt the opposite extreme, large tents (such as koi) and certain marine fish (groupers, sturgeons) reach extraordinary longevity when the environment is stable and without predators.
Maintenance checklist to extend the life of your fish
- Size the tank correctly (liter/cm rule and extra margin) and avoid mixing incompatible species.
- Cycle the aquarium before introducing fish and measure parameters weekly to correct them in time.
- Filtration oversized and stable; do not wash biological material with tap water.
- Water changes frequent partials, substrate siphoning to prevent planarians and control temperature.
- Varied diet and quality, small portions; adjusted to the eating habits of each species.
- Decoration and shelters that reduce stress and break visibility between territories.
- live plants to oxygenate, consume nitrates and stabilize the ecosystem.
Why do my fish die every few months?
If your fish don't survive more than a few months, check these critical points: insufficient cycling (introduce fish before the filter processes ammonium/nitrite), overpopulation, incompatibilities of character, parameters out of range (temperature, pH, hardness), and inadequate feeding. Perform weekly tests, reduce biological load, improve filtration, and adapt diet and compatibility of species. With these adjustments, it is common to move from recurrent losses to populations stable and long-lived.
Taking into account all of the above, the answer to "how long does a fish live" depends so much on the biology of each species as of the maintenance decisions that you take at home. In well-sized aquariums, with stable water, good oxygenation, plants and an adequate diet, most domestic species easily overcome the low forks and tend to approach their longevity ceiling, while in small fish tanks and without parameter control the forecast falls to a minimum due to the chronic stress and the toxic peaks of the water.
