The zoo houses a colony of critically endangered Tokyo bitterlings—tiny, iridescent fish. Their mating ritual involves the female laying eggs inside a living freshwater mussel. The male then fertilizes them. It is a delicate, high-risk act of trust.
From tender pairings at Ueno Zoo to dramatic, long-distance relationships at Tama Zoological Park , the romantic lives of Tokyo’s animals offer a unique, heartwarming perspective on nature. 1. Ueno Zoo : The Historic Heart of Animal Romances The zoo houses a colony of critically endangered