**2.9 Probiotic research as an advantageous facilitator in aquaculture**

Researchers have previously shown that probiotic activities play a wide range in the host body (e.g., decreasing illnesses and stress, enhancing immunity, modulation of gut microbiota, nutritional assistance, improving quality of water, etc.). So, the positive effects of probiotics help to boost animal feed value and growth and improve aquaculture breeding and hatching rates. Probiotics have recently become a highly common technique in the aquaculture industry, and they are mostly isolated from fish guts. A recent study shows that Lactic acid bacteria (LAB), named Bifidobacterium, and Streptococcus are among the most common bacterial suggestions. Even though the use of probiotics in aquatic species is a relatively new concept, it has gotten a lot of interest because of its ability to influence many physiological processes.

In this study the many positive features of probiotics in aquaculture industries were proven. Probiotics are regarded as new functional agents with a potential impact on any aquatic organism's gut microbiome. Researchers have already shown that probiotic activities play a broad spectrum in the host body, such as reducing illnesses

and stress, increasing immunity, modulating gut microbiota, nutrition aid, improving water quality, etc. In addition, the positive benefits of probiotics boost feed value and growth for the animal and improve the rate of aquaculture spawning and hatching.
