The Oscar is one of the most personality-packed fish available in Indian pet shops, it recognises its owner, begs for food, and rearranges its own tank. It is also one of the most frequently surrendered, because buyers do not expect how large it gets, how much it eats, or how completely it dismantles a community aquarium. Here is what owning one actually looks like.

The silver or golden arowana turns up in homes across India as a symbol of prosperity, but the fish itself has needs that most buyers discover too late. It grows to nearly a metre, hunts from the water's surface, and will die slowly in a tank that is too small. Here is what keeping one actually demands.

Most fish breathe through gills alone, but gouramis carry a secret organ that lets them gulp air straight from the surface. It is why they survive in oxygen-poor ponds, why you see them rise and dip all day in a home tank, and why understanding this one trait changes how you keep them, and how you read them when something is wrong.

Many owners assume an indoor cat is safe from disease and skip vaccinations after the first year. That assumption has a gap in it. Some of the viruses a cat can catch do not need another animal in the room to arrive. Here is what vets consider non-negotiable for an indoor cat, what the vaccines actually do, and when a booster is not optional.