An aquarium is like a big, clear box of water where fish live. Imagine if you had a little home just for your toys, where they could stay all the time. Fish need a special home like that, too, because they live in water, not on land like us. The aquarium keeps the water clean and gives them a nice place to swim around.
Think of an aquarium as a magical underwater world. It’s like a tiny ocean or a lake, but you can see everything inside because the sides are made of glass. You can watch the fish swim, play, and sometimes even hide behind the rocks or plants. It’s like having a little piece of the ocean right in your room!

An aquarium is also like a fish hotel. Just like when people go to hotels to stay and sleep, fish stay in aquariums to live. They have everything they need inside there, like food, water, and sometimes even friends to swim with. It’s a safe and cozy place for them to be happy and healthy.