North New Guinea rainbowfish

How many fish can I keep?4 min read

Why "one cm of fish per liter" falls short, and what adult size, schools, territory and swimming zones mean for how many fish a tank can hold.

How to set up an Asian aquarium5 min read

Two aquariums from Southeast Asia: calm forest streams and peat swamps with soft, brown water, and fast mountain streams with cool, oxygen-rich water.

How to set up an aquarium from Australia and New Guinea4 min read

The home of rainbowfish: water, substrate, plants and light for rainbowfish, blue-eyes and peacock gudgeons, with a long aquarium and open water in the middle.

How to add new fish4 min read

From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.