Gnathocharax steindachneri

Fish that get along4 min read

Temperament, fin nippers, fish that eat other fish, and fish that need the same water. And what the Harmony mark in the app means.

How to set up a South American aquarium4 min read

Soft, acidic water, subdued light, sand, roots and fallen leaves: how to set up a biotope aquarium from the Amazon and the rivers around it.

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.

Quarantine for new fish3 min read

Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.