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Breeding technique involving the mating of fishes from two different species to combine beneficial traits from both parents. Commonly seen in fish culture, for example, breeding different species of catfish.

The careful selection and maintenance of mature adult fish used for breeding to ensure that they are healthy and genetically diverse. This process is vital for nearly all cultured species, including shrimp and sea bass.

A form of asexual reproduction where the offspring are produced by females without genetic contribution from a male. This technique is often used with live-bearing ornamental fish.

A form of inbreeding aimed to maintain a high genetic purity of a particular desirable trait, often practiced with ornamental fish like koi and guppies.

The process of sorting and classifying aquatic animals based on size, shape, color, and other desirable features to enhance product consistency. Applied in many species including shrimp and salmon.

Induction of one or more extra sets of chromosomes in an organism to create a polyploid, which can lead to larger size and other beneficial traits. This technique is frequently applied to oysters and trout.

The process of fertilizing eggs with sperm outside the body, which then allows for strong control over genetic pairing. This technique is utilized in breeding programs for sturgeon and other high-value fish.

The use of very low temperatures to preserve alive sperm, eggs, or embryos which can be used later for breeding. This technique is crucial for genetic resource management in many species, including salmon and trout.

Techniques used to feed, grow, and maintain the health of fish and crustacean larvae until they reach a juvenile stage. Key for species like lobsters and sea cucumbers.

Using hormones or temperature treatments to influence the sex ratio of the offspring, typically aiming for a mono-sex population. This method is applied, for example, in tilapia farming to prevent early reproduction and enhance growth.

The deliberate introduction of sperm into a female's reproductive tract for the purpose of achieving fertilization without sexual intercourse. Often used with salmonids to optimize breeding outcomes.

The mating of individuals from different strains or breeds, resulting in offspring with a combination of traits. Often used for creating robust hybrid species such as tiger prawn.

A breeding system where different male stocks are rotated across different female groups over time, enhancing genetic diversity. This is often practiced in breeding catfish.

Producing organisms with three homologous sets of chromosomes, which can result in sterility and improved growth. Applied to species such as oysters and salmon.