The Asian green mussel (Perna viridis), also known as the Philippine green mussel or Tahong, is an economically important mussel, a bivalve belonging to the family Mytilidae. The Asian green mussel is a large bivalve, with a smooth, elongate shell typical of several mytilids. It is harvested in the Philippines as food source because of its fast growth. It is rich in vitamins, minerals, protein and carbohydrates
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