In the wild, many pufferfish are opportunistic predators, relying on movement to trigger their hunting instincts. They chase down crabs, hunt for worms, and even ambush small fish, crunching them apart with their powerful bites. When suddenly placed in an aquarium and presented with prepared foods, many puffers simply don’t recognise these items as edible.

The Pufferfish Keepers guide to Thiaminase

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