First it was the hawklet adopted by bald eagles. Then it was the lioness nursing the leopard cub. And now in the latest example of interspecies care, there’s video of a cardinal feeding goldfish.

Usually, feeding wild animals is not a smart move, says Connor Liess with the Idaho Department of Fish and Game. Feeding birds, however, is a special case, since they don’t usually become dependent on ...

This video shares expert tips on keeping your goldfish tank crystal clear, covering filtration, water changes, feeding habits, and algae control. Learn practical techniques to maintain a healthy, ...