Caring for an ant actually means caring for an entire colony starting from a single fertilized queen: giving her a dark and humid space to found, waiting without disturbing her, and then offering the nascent colony an ant farm with different humidity zones, varied food, and a period of winter rest if the species requires it.
What is myrmecology and what does it mean to have an ant colony at home?
Myrmecology is the study of ants, and in the context of the hobby, "doing myrmecology" means keeping a live colony in a domestic ant farm to observe its development from founding until it grows in number of workers. Unlike other pets, you don't care for a single animal: you care for a superorganism made up of one or more queens and all their offspring, where each worker performs a function according to its age and the needs of the moment. The hobbyist does not interact directly with the ants, but rather provides them with an environment—temperature, humidity, space, food—similar enough to what they would have in nature for the colony to develop on its own. It is a hobby of observation and patience: visible changes, especially at the beginning, occur in weeks, not days.
How is an ant colony founded?
It all starts with a fertilized queen after the nuptial flight, who is placed alone in a test tube prepared as a founding chamber: water at one end, held by a cotton plug, and the rest of the tube dry, covered with opaque paper to simulate the darkness of an underground chamber. In most species, founding is claustral, meaning the queen does not need to eat during this period: she lives off her own fat reserves and the tissue of her flight muscles, which she reabsorbs. For this reason, food is not offered, and the tube should not be opened, moved, or exposed to vibrations: stress and handling are the most common causes of failed foundings. There are species with semi-claustral founding, in which the queen does need to go out to find food during this phase; what type of founding corresponds to each species is something that should be checked in its profile before starting, not assumed.
What does an ant farm need for the colony to thrive?
A functional ant farm primarily needs a humidity gradient: a humid area where the queen and larvae are comfortable, and a drier area where food can be stored without molding. This is why plaster ant farms remain the reference material in the hobby: plaster is porous, absorbs and releases moisture gradually, can be carved to create chambers and galleries, and is non-toxic to the animal. Designs in acrylic, 3D printed resin, or natural cork also work, but each material behaves differently regarding humidity and requires a slightly different watering management. In addition to the material, ventilation is needed—to prevent stagnant air and mold—and an anti-escape barrier on the walls of the foraging area, usually talc or oil, because ants climb smooth surfaces better than they seem. In our collection of ant farms, there are plaster and modular models designed to cover these needs from day one.
- Humid zone for breeding and dry zone for storage, never the entire ant farm at the same humidity.
- Sufficient ventilation to prevent condensation and mold.
- Reliable anti-escape barrier on the entire surface of the foraging area, checked periodically.
What do ants eat in an ant farm?
The diet of a colony is organized around three elements: sugars, protein, and water. Sugars—honey water, artificial nectar, fruit—provide the energy adult workers need to move and work. Protein—live or frozen insects like small crickets, mealworms, or flies—is what allows larvae to grow and becomes especially important when there is developing brood. Water should always be available in a drinker that prevents the ants from drowning. The exact proportions and feeding frequency vary greatly depending on the species: some colonies are primarily granivorous, others almost exclusively predatory, and most fall somewhere in between; this specific distribution should be consulted in the profile of each species instead of applying a single pattern. As a general rule, it is preferable to offer small amounts frequently and remove uneaten protein remains before they rot. In the feeding section, you will find the options we commonly use to cover both categories.
How do I know if my colony is doing well or if something is wrong?
A progressing colony shows consistent signs: the queen remains grouped with some of the workers and brood, eggs, larvae, and pupae are continuously visible, workers forage normally, and the number of individuals increases over time, albeit slowly. Warning signs go in the other direction: prolonged absence of laying, brood disappearing without developing into adult workers, visible mold in the humid area, mites on the ants or food, high and sustained mortality, or a queen isolated from the rest of the group for days. None of these signs alone is necessarily serious—a young colony can go weeks without visible changes—but the combination of several, or their persistence over time, is the time to review humidity, feeding, and management before the problem worsens.
What is diapause and why does an ant colony hibernate?
Diapause, or hibernation, is a period of seasonal rest that species from climates with marked winters need: the colony's activity is reduced to a minimum, the queen slows or stops laying, and general metabolism lowers to save energy until favorable conditions return. It is not a breeder's whim or a simple optional pause: in species that require it, systematically skipping it can shorten the queen's lifespan and weaken the colony's growth rate in subsequent years. Tropical species, on the other hand, usually do not need diapause at all and remain active all year round if conditions remain stable. The exact temperature, duration, and time of year it should be applied vary by species, so this is one of the points where it is advisable to follow the specific animal's profile instead of a generic figure: getting hibernation wrong is one of the errors with the most consequences for the long-term health of the colony.
What are the most common mistakes when starting ant keeping?
Most failures in the hobby do not come from bad luck, but from a handful of recurring mistakes. Checking the founding tube multiple times a day, or exposing it to light and vibrations, is probably the most frequent and most lethal for a queen that has not yet produced workers. Feeding a queen during claustral founding, when her biology doesn't need or expect it, usually generates mold rather than helping. Buying a large ant farm for a still small colony disperses the ants and makes it difficult for them to maintain the humidity gradient they need. And starting with a demanding species without having previously managed a simple colony usually leads to avoidable frustration. For those starting from scratch, it makes sense to begin with a starter kit designed to cover founding and the first few months without having to improvise each piece separately, and choose a species with a reputation for being resilient—many European ants fall into this category—before jumping to more delicate species.
- Do not check the founding tube more than necessary; each opening is an interruption for the queen.
- Do not feed a queen in claustral founding unless the species is semi-claustral.
- Do not oversize the ant farm relative to the actual size of the colony.
- Do not mix queens of different origins or different species in the same space.
When should you ask an experienced breeder for help?
There are times when it's better to ask than to keep trying on your own: when a founding takes much longer than usual without showing signs of eggs or larvae, when mold or mites appear and it's unclear how to treat them without harming the colony, when there is sudden mortality without an obvious cause, or when it comes to confidently identifying a species before applying a specific management—and especially before deciding whether or not to hibernate it. An experienced breeder can usually distinguish in seconds between a colony that is simply progressing slowly and one that has a real problem, which is not always obvious to someone who has only been in the hobby for a few months. Asking in time, in a specialized forum or directly to the person who sold the colony, prevents a minor problem from becoming the loss of the queen.
Frequently asked questions
What is an ant farm or formicarium?
An ant farm, also called a formicarium, is the structure where an ant colony lives in captivity. It usually combines a nest area—with chambers and galleries, typically in plaster or another moisture-retaining material—and a foraging area, drier, connected by tubes where the ants go out to find food and water. The design varies according to the size of the colony and the species.
Do I need a permit to keep ants in Spain?
For most common species in the hobby, a special permit is not required, but it is advisable to check the status of each specific species before purchasing it, as some ants are included in catalogs of invasive alien species at European or Spanish level. When in doubt, it is preferable to confirm with the seller or with current regulations before acquiring a specimen.
How long does it take for a queen to form a visible colony?
It depends greatly on the species and ambient temperature, but as an order of magnitude, the first workers usually appear weeks after founding, and a colony with a number of individuals visible to the naked eye can take several months to form. Growth accelerates progressively: the first few months are the slowest, because there is only one queen indirectly feeding the entire colony.
Can I have an ant farm in a small apartment?
Yes. Most ant farms for developing colonies take up little space—similar to a small terrarium or a small aquarium—and do not generate noise or odor if kept clean. The necessary space grows with the colony, so it is advisable to choose an ant farm according to the expected medium-term size, not just the current number of workers.
What is the difference between a plaster ant farm and an acrylic one?
Plaster retains and releases moisture naturally, which makes it easier to maintain the wet-dry gradient without as much manual control. Acrylic or 3D printed resin do not absorb moisture by themselves, so they depend more on manual watering and well-calculated ventilation, although they are usually more resistant and easier to clean. Neither is better in absolute terms: the choice depends on the level of management one wants to assume.
Is it dangerous to have ants at home?
For common species in the hobby, the risk is low if the ant farm has an adequate anti-escape system and is checked regularly. The real risk is not so much of biting—most common species in the hobby do not pose a significant danger—but of escape if the anti-escape fails, so checking seals and barriers is part of routine maintenance, not an optional extra.
How long does an ant queen live?
It varies enormously depending on the species, but in general, queens live considerably longer than workers, in many cases several years and in some species well over a decade under appropriate conditions. The specific longevity depends on the species and whether its management needs are respected, including hibernation when applicable.
Can I combine two colonies or two queens in the same ant farm?
No, unless it is a species with natural polygyny (several queens cohabiting) and a specific introduction protocol is followed. Combining colonies or queens without further ado almost always results in aggression and death of one of the parties, because ants identify individuals alien to their colony by scent and treat them as a threat.