Sex-changing animals

Establishing the facts in the sex–gender debate

OF THE MANY pressing ecological issues facing the world today, invasive species come in near the top of the list. The aquarium trade is not blameless in its role of introducing unwanted species well o

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

THE DEEP SEA IS BY FAR THE LARGEST habitat on Earth. It is, says Natalie Lawrence in her book Enchanted Creatures, “the last wilderness vast enough to hide monsters”. Unsurprisingly, many myths have a

I HAVE ALWAYS loved unusual aquatic creatures. It isn’t surprising then that I was among the early adopters who embraced shrimp-keeping, a special branch of the aquarium hobby. I started off with the

A new plan is revealed to stop colourful Cuban painted snails from going extinct.