Discovering Ich in your aquarium for the first time can be alarming, but rest assured: it is a well-understood condition that is usually...

The Congo River is an ecosystem built on pressure and motion. Tetraodon miurus isn’t merely surviving there: it’s engineered for it. Its flattened body, dense musculature, and anchored posture aren’t quirks of behaviour, but solutions to physics. To keep one is to study a living example of how evolution solves chaos with precision.

The Mbu Puffer (Tetraodon mbu) is the undisputed giant of the freshwater pufferfish world. It is native to Central Africa, with a distribution spanning much of the Congo River Basin, including the wide expanse of Pool Malebo (Kinshasa–Brazzaville) and extending into Lake Tanganyika.