I'm pleased to see this idea making a comeback in the hobby, says Nathan Hill. It's a boosting canister that sits inline before your existing canister — and the possibilities seem endless! In its ...

Humanely destroying a fish is an inevitable part of keeping them in any numbers. Shocked by some advice being touted online, Nathan Hill takes a closer look at how to do it - and how not to. Somehow I ...

In the dangerous expanses of open water, it can pay to be a small fish. So small, in fact, that you can hide in a snail shell. Meet evolution's curiosities from Tanganyika. Based upon chutzpah to ...

This is a question for which there is no satisfactory answer, because we are only beginning to understand the physical and anatomical basis of transparency in living tissue. Although the physical and ...

Unless you’ve accidentally locked yourself in the fridge, you’ll be unable to miss just how sweltering it is this summer, writes Nathan Hill. Here are a few ways to keep your fish happy over this ...

Spined and armoured, pet catfish that are too large are sometimes released into the wild to cause mayhem. Rupert Collins identifies a group that needs plenty of room and responsible owners… Just ...

Flowing 2,140 km/1,330 miles through Colombia and Venezuela, the Orinoco is one of South America's longest rivers, with more than 1,000 freshwater fish species, many of which are exported as aquarium ...

Do you know your Bach from your Stravinsky? It would appear that goldfish do… A new study reveals that goldfish can tell the difference between music composed by Johann Sebastian Bach and Igor ...

Want to convert a freshwater aquarium to a marine one? We answer your most frequently asked questions about how to change over and what the transition actually involves. You can, as it will provide ...