YOUR EVERYDAY FIELD GUIDE

Fishes.

Discover the world on the other side of the glass.

Fishes / Habitat

Zebra Danio: The Aquarium Fish That Became a Lab Icon

The zebra danio, Danio rerio, is a small, energetic fish with horizontal blue and silver stripes, native to slow-moving streams and rice paddies across the Ganges and Brahmaputra river basins of India

2 min read

Fishes / Health

Amoebic Infections in Freshwater Fish: An Uncommon but Real Threat

Amoebae get far less attention in freshwater fishkeeping than ich, velvet or the common bacterial infections, and for good reason: genuine amoebic disease is considerably rarer in home aquariums than

3 min read

Fishes / Health

Bringing Koi Indoors: Is It a Good Idea?

Koi are pond fish through and through, bred over centuries to be viewed from above in open water, and moving them indoors is a genuine departure from what the species is built for. That said, there ar

3 min read

Fishes / Behaviour

Why Your Tank Has Turned Green, and How to Clear It

A tank that has gone from clear to a hazy, pea soup green almost overnight is dealing with a free floating algae bloom, most often a microscopic organism called euglena, and while it looks alarming, i

4 min read

Fishes / Getting Started

Saltwater Aquarium Glass Thickness and Tank Safety

Glass thickness is one of those details that most hobbyists never think about until something goes wrong. If you are buying a ready-made tank from a reputable manufacturer, the glass has already been

3 min read

Fishes / Nutrition

Feeding Your Aquarium Fish the Right Type of Food

Not all fish food is interchangeable, and matching food type to your fish's natural diet makes a genuine difference to colour, growth, and long-term health, far more than most beginners initially real

2 min read