The Korea Fisheries Village and Port Authority, along with Gimpo City, have released 350,000 young puffers into the Han River basin as part of an eco-friendly project aimed at increasing fish resources and restoring the ecosystem. The young fish, which were raised and managed to be over 5.0 cm in length, have undergone infectious disease tests and are safe for consumption, excluding the internal organs and blood which contain tetrodotoxin. The puffers will grow to 20-30 cm in size over the next 3-5 years.