Although probiotics for human and terrestrial animals are dominantly lactic acid bacteria (LAB), many different genera, including photosynthetic bacteria, yeast, Bacillus and Lactobacillus have been evaluated as probiotics in fish and shellfish ( Gatesoupe, 1999, Vine et al., 2006 and Kesarcodi-Watson et al., 2008). However, few studies have been carried out on spore forming lactic acid producing bacteria such as Bacillus coagulans (B. coagulans) as probiotics in larvae shrimp