Colourful splitfins

TO BEGIN THE story of how I came to build a display aquarium in a zoo, we need to go back almost 7 years to when I first encountered these ‘wild’ guppies. I had just started working as an aquarium tec

A sturdy bonsai freshwater swashbuckler, the spiny stickleback is often the first fish we catch as children

MOST FISH ARE carnivorous at some level, taking insects and other small prey items even if they otherwise graze on algae or plants. But those that feed primarily on other fish often have behaviours an

Peek over the parapet of a bridge just as daylight bleeds into dusk, gazing down through the clear layers of a shallow river or chalk stream, and you may glimpse the shadowy, serpentine form of an eel

Peter is our disease expert. Send questions his way if you have pathogen problems. Bob is a master of fishkeeping general knowledge and community tanks. Jeremy is more than adept when it comes to cich

Check your answers against our explanations. Remember, there are no ‘trick’ birds or extreme rarities among these...