THINK OF SOUTH American fishes and we mostly think of species from the Amazon basin. Like all river basins, the Amazon has an edge, in this case, one of those edges is the Guiana Shield, a region rich

IN THE AUGUST ‘25 edition of PFK, I discussed at length one of my favourite oddball fish: the urchin clingfish, scientifically known as Diademichthys lineatus. In said article, I mentioned that althou

In 1977, the year the movie Star Wars: Episode IV – A New Hope was released, marine geologists laid eyes on a deep-sea hydrothermal vent for the first time. They were diving inside the submersible, kn

THE CARIBBEAN HAS long been regarded as a diver’s paradise, and for good reason. A sprawling patchwork of islands, spread over a million square miles, they encompass almost every type of underwater ha

Clouds of noxious gas, stink bombs and purple smokescreens may sound like schoolboy pranks, but the animal world is just as capable of executing arresting chemical warfare, says Deborah Nicholls-Lee

DR PETER BURGESS Peter is our disease expert. Send questions his way if you have pathogen problems. BOB MEHEN Bob is a master of fishkeeping general knowledge and community tanks. JEREMY GAY Jeremy is