Different species of fish are on display at Nanjing Underwater World aquarium in Nanjing City, East China's Jiangsu Province, Jan. 21, 2019. Small tropical marine fish were housed at the aquarium during an exhibition to welcome the Spring Festival, China's Lunar New Year. (Photo: China News Service/Yang Bo)
Different species of fish are on display at Nanjing Underwater World aquarium in Nanjing City, East China's Jiangsu Province, Jan. 21, 2019. Small tropical marine fish were housed at the aquarium during an exhibition to welcome the Spring Festival, China's Lunar New Year. (Photo: China News Service/Yang Bo)
Different species of fish are on display at Nanjing Underwater World aquarium in Nanjing City, East China's Jiangsu Province, Jan. 21, 2019. Small tropical marine fish were housed at the aquarium during an exhibition to welcome the Spring Festival, China's Lunar New Year. (Photo: China News Service/Yang Bo)
Different species of fish are on display at Nanjing Underwater World aquarium in Nanjing City, East China's Jiangsu Province, Jan. 21, 2019. Small tropical marine fish were housed at the aquarium during an exhibition to welcome the Spring Festival, China's Lunar New Year. (Photo: China News Service/Yang Bo)