Malaysian aquatic researchers used photosynthetic bacteria, marine diatoms and Artemia to test P. monodon from nauplii to post-larvae. The amount of photosynthetic bacteria added to the feed 1 was fed with 1%, the feed 2 was 2%, the feed 3 was 3%, the feed 5 was 5%, and the feed 4 was a control feed without adding photosynthetic bacteria. The experimental results showed that the photosynthetic bacteria added to the diet significantly affected the growth and survival rate of Penaeus monodon larvae. The body length (6.13 mm) of shrimp fed with 1% diet 1 of photosynthetic bacteria was significantly higher than that of shrimp fed with other bait. Test 2 was measured. The survival rate of the shrimp fed the photosynthetic bacteria 2% bait 2 was the highest, which was 46%. The average body length of the shrimp (6.88mm) was also significantly higher than that of the shrimp fed the other baits. Both experiments showed that shrimps fed 3% and 5% diets supplemented with photosynthetic bacteria had low growth and survival rates, and high levels of ammonia in water. The test results show that the suitable amount of photosynthetic bacteria in shrimp feeds is less than 2%.
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