Goldfish, danios, pond fish, and fantails can tolerate cold water. Guppies, some dwarf shrimp, and platies can tolerate room temperature and cold water of around -19 degrees Celsius. They don't require an aquarium heater if the water temperature doesn't fluctuate much.
Once you start a shrimp aquarium, there's no escaping it... you'll fall in love with keeping these beautiful bottom-dwelling creatures. Over time, you might want to add more life to your nano aquarium and add some fish, or you might have an existing aquarium you'd like to add shrimp to. This article describes everything you need to know about keeping dwarf shrimp and aquarium fish.
In the old days, (gold)fish were kept in a fishbowl. Chances are you have one in your attic too. Is it possible to keep a fish in a glass fishbowl? Which ones are safe and which aren't? In this article, we'll explain everything about fishbowls.
Fish always seem awake! Do they even sleep? And how do fish sleep? That's what you'll learn in this article, because... they just sleep differently than you think.