Hong Kong police have arrested a 42-year-old man after he allegedly dumped laundry capsules into a pond, killing a catfish and injuring 30 turtles in Ma On Shan, the South China Morning Post has learned.Police said on Saturday that officers were alerted on Wednesday by a security guard who found a large amount of foam in a pond at a residential estate on Kam Ying Road where turtles were kept.The guard removed the turtles from the pond and cleaned it, the force said.Officers arrested the man...