Piyathip Setthawong

1. Introduction Snakehead fish (Channa spp.) are air-breathing, carnivorous freshwater teleosts that are widely distributed across Asia and are becoming increasingly important for Asian aquaculture. Their ability to tolerate fluctuating environmental conditions, together with strong consumer demand for their firm and flavorful flesh, has facilitated the rapid expansion of snakehead farming in many Asian countries [1, 2]. Among these species, the giant snakehead (C.

Patrones ecogénicos distintivos permiten una diferenciación precisa entre hembras y machos Mejorar los programas de cría es importante para la industria mundial del cultivo de tilapia, incluyendo aquellos que buscan la determinación precisa del sexo para fundamentar los programas de cría selectiva y la gestión de la población.

Distinct echogenic patterns allow for accurate differentiation between female and male fish Improved breeding programs are important for the global tilapia farming industry, including those for accurate sex determination to inform selective breeding program and population management. Indeed, the optimal male-to-female ratio for effective tilapia reproduction is generally one male to two to four females, as a single male can produce sufficient sperm to fertilize the eggs of several females.