Evaluation of the bacterial flora in the gastrointestinal tract of ornamental fish and identify bacteria with probiotic potential

The purpose of this study was to investigate and identify ornamental koi fish gut bacterial flora and bacterial evaluation of probiotics is likely . Sample of 60 fish breeding koi fish aquarium Azmrakz Qom province by randomly took a tour , then proceed to the culture medium at the gut on third PCA, EMB, MRS was. Koi fish as a recurring every 20 pieces of intestine were considered , and after 48-24 h at 30 ° C. The number of bacteria in terms of CFU / ml was assessed by Gram stain and then further tests were conducted. the mean counts of aerobic and anaerobic bacteria in the gut (Log, CFU / ml) 73/0 ± 13/6 was recorded . Identification of bacteria in the bowel alginolyticus, Vibrio vulnficus, Vibrio parahaemolyticus Vibrio, Vibrio mostichinokovi, Pseudomonas mendocina, Corynebacterium sP. , Enterobacteriaceae Staphylococcus epidermidis,, Strebtococcase (Lactococcus, Loconostoc, Entrococcus) , respectively. Fish intestinal bacterium Vibrio Mstychynvkvvy frequency 1/18 percent and then 17 percent of most common bacteria Escherichia Clay with abundant fish intestine . According to the findings, ornamental koi fish intestine consists of three important bacterial genus Lactococcus, Loconostoc, Entrococcus have antimicrobial properties against bacteria were targeted probiotics so the property can be verified .