Fish breeding

Ask about the species bred, their origin, housing conditions, diet and the water parameters used by the breeder. This information is important for preparing a compatible environment before the fish arrive.

Where possible, also observe the general condition of the facilities and animals. A breeder should be able to explain the needs of the fish offered and provide information about their adult size, behavior and current keeping conditions.

Requirements can differ greatly between species. Before acquisition, learn about adult size, suitable temperature, water characteristics, behavior, diet and required space.

Avoid choosing solely according to the fish’s size at the time of purchase. Some fish sold when young can grow considerably larger and require a different aquarium as adults.

Freshwater aquariums and marine systems do not operate in exactly the same way. Equipment, parameters to monitor and animal requirements depend on the type of environment and species being kept.

Before choosing a fish, make sure your system matches the environment it requires. A fish suited to a tropical freshwater aquarium cannot simply be transferred to an environment with different characteristics.

The aquarium should be set up and functioning correctly before fish are introduced. Filtration, temperature, water quality and overall system operation should be checked before the animals arrive.

A recently filled aquarium is not automatically ready for fish. The biological function of the filtration system must also be considered so that waste products can be processed correctly.

Waste produced in the aquarium generates nitrogen compounds. A functioning biological filter allows microorganisms to participate in processing these compounds. Establishing this biological balance takes time.

While preparing a new aquarium, testing can be used to monitor parameters such as ammonia, nitrite and nitrate. It is preferable to confirm that the system is functioning correctly rather than using the first fish as a way to establish the cycle.

Fish live directly in the environment on which their respiration, metabolism and health depend. Water that looks clear does not necessarily have suitable parameters.

Temperature, pH, nitrogen compounds, salinity where relevant and other parameters can be monitored according to the aquarium type and species present. Target values are not universal and should correspond to the needs of the fish being kept.

Required aquarium size depends on species, adult size, behavior, number of fish and the aquarium setup. A single general rule based on liters or gallons cannot accurately determine the needs of every fish.

Some species primarily use horizontal space, others defend territories or normally live in groups. Tank dimensions and layout should therefore be considered, not just total volume.

Two species that are appealing separately are not necessarily compatible in the same aquarium. They should be able to live under similar water conditions and their behavior should allow suitable coexistence.

Consider territorial behavior, possible predation, adult size, activity level, social needs and the areas occupied within the aquarium. The breeder can provide information about the typical behavior of the species offered.

Social behavior varies greatly between species. Some fish naturally live with conspecifics, while others may defend a territory or have difficulty tolerating certain individuals.

Before acquisition, determine whether the species should be kept alone, as a pair, in a group or according to another social arrangement. The number of fish should not be chosen solely according to available tank space.

Dietary requirements differ between species. Food type, particle size, presentation and feeding frequency should be adapted to the fish being kept.

Ask the breeder what the fish are currently eating so you understand their existing routine. An unsuitable diet or excessive feeding can also affect water quality.

Where possible, observe fish before acquiring them. Look at swimming behavior, general activity, respiration, appearance and the condition of fins and skin.

Also observe other fish in the same system. If several animals show unusual behavior or appearance, ask for additional information before introducing a new fish into your aquarium.

Transport is an important transition. Ask the breeder how the fish will be packaged and try to minimize unnecessary delays between departure and arrival at the new aquarium.

Temperature and transport conditions should remain appropriate for the animals involved. For a particular journey or a species requiring specific precautions, ask the professional how transport should be organized.

Before the fish arrive, check the aquarium temperature and main water parameters one last time. Significant differences between transport water and the new aquarium may require an appropriate acclimation process.

The introduction method may depend on the species and differences in water parameters. Ask the breeder which water conditions are used in their facility and what transition they recommend for the fish concerned.

Introducing a new animal into an established aquarium can also introduce infectious agents. A separate system allows new fish to be observed before they are introduced to the main population.

Quarantine procedures depend on species, system and context. If you maintain a significant aquarium collection or regularly add new fish, an experienced professional or veterinarian familiar with fish can help establish an appropriate protocol.

Keeping fish involves regular system maintenance. Water monitoring, water changes, filter maintenance, waste removal and daily observation of the animals are all part of aquarium management.

Before acquiring fish, make sure you have the time, equipment and knowledge needed to maintain the conditions required by the chosen species over the long term.

Changes in swimming, activity, appetite, respiration or appearance may indicate that a fish is experiencing a problem. Environmental conditions and water quality are among the first factors to check.

Avoid using multiple treatments without identifying the cause of the problem. In cases of mortality, persistent signs or an unexplained situation, seek advice from a veterinarian familiar with fish medicine or another qualified professional.

Ask for the exact species or variety, adult size, social needs, diet, behavior, water parameters used by the breeder and the conditions required to keep the fish.

If your aquarium already contains fish, tell the breeder which species are present and describe the tank. This allows compatibility to be discussed more accurately before acquisition.

Depending on the species, origin, country, territory and destination, requirements may apply to ownership, sale, import or transport. Check the requirements that specifically apply to the fish you intend to acquire.

Prousty & Co allows you to search for fish breeders and discover the species and varieties they offer. Use the available filters to find professionals matching your search.

Review the information available on profiles and contact the breeder directly to learn about available fish, their requirements, current water parameters, transport arrangements and acquisition conditions.