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Fishkeepers the world over struck gold with the introduction of the small colourful rock dwelling cichlids from East Africa’s Lake Malawi. The mbuna as they are known (pronounced mmm-boon-a or mu-boon ...

George Farmer takes a look at how to measure the levels of CO2 in the planted aquarium to ensure it benefits the plants, while remaining safe for your fish. Carbon dioxide (CO2) injection in planted ...

Nathan Hill creates a useful aquatic device for those who want a river biotope tank with a more natural flow. Here's how to do it... If we absorb the new documentaries and scientific papers we can ...

Bob Mehen takes a look at the the see-through siluriids —glassy creatures that refuse to conform to the accepted catfish stereotype. Catfish seem to be everywhere. The siluriforme group has more ...

Dave Wolfenden on a partnership sealed purely by mutual benefit between pistol shrimps and gobies — and how you can set up your marine tank to foster that special relationship. For those of a ...

This amazing aquascape has been set up using only plastic plants. Impressed? Jeremy Gay sings the praises of the Sydeco plastic plant range from Rosewood and organises a step-by-step guide to show ...

Many new hobbyists have problems keeping plants in their tanks because they've been sold non-aquatic ones. Jeremy Gay explains more. I can travel the length and breadth of the country and bet that ...

Salt has been scientifically proven to have a number of benefits. Matt Clarke scours the journals and speaks to industry experts for the latest on the subject. Many people are very anti-salt. Why is ...

Bad water is the biggest killer of fish in the aquarium and New Tank Syndrome (NTS) is one of the most common causes. Jeremy Gay describes how to recognise and fight it. New Tank Syndrome occurs ...

Neale Monks advises a PFK reader on the causes of "stunting" in the aquarium. Q. I am aware that some species of fish produce a growth inhibiting hormone that can have marked effects in a densely ...

Pufferfish inflate to prevent predators eating them, but how do they do it and why don't their ribs break when they do so? Pufferfish inflate by rapidly pumping water into their stomach. Studies of ...