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Archive for March, 2010

Introduction

Pelvicachromis taeniatus male

Adult males are spectacular fish by any standards.

Most aquarists are familiar with the common krib (Pelvicachromis pulcher). Kribs are beautiful little cichlids and are, quite rightly, popular fish; but there are other members of the genus that are equally nice. One such species is Pelvicachromis taeniatus which comes in various geographical colour morphs; each named after a local town. The variety discussed here is “Moliwe”.

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Fish introduced into rivers by human intervention over the past 150 years have modified the average body size of fish assemblages in many areas of the world. A study conducted by researchers from CNRS, the University of Toulouse, IRD and MNHN, as well as the universities of Antwerp (Belgium) and Utrecht (the Netherlands), shows that non-native fish are larger than native species by an average of 12 cm.

It’s long been known that the introduction of non-native species can be a disaster for the local plants and animals. Witness the damage that rabbits have caused in Australia or gray squirrels in The United Kingdom.

Freshwater fish have their fair share of horror stories with Lake Victoria in particular being damaged beyond repair.

In this study the authors show how the introduction of non-native freshwater fish has increased the average size of the fish population. (Most introduced fish are for food and sport, species which tend to be large and tasty!)

Read more here – Science Daily

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Introduction

Some half decent weather at last and yet another busy night. Lots of interesting fish getting swapped before the meeting! (more…)

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To me, an aquarist is not someone who just keeps a few fish in a tank and slips a few flakes into it at some time during the day. This person wonders why he loses a fish every so often and visits his local dealer to replace them with fish he often knows nothing about, only to repeat the cycle. We’ve all met them. (more…)

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Introduction

Another busy night bodes well for the coming year. Also good to see youngsters at the meetings. (more…)

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He’s been a big fish in a little tank for more than four decades, and Buttkiss the black pacu is finally swimming in well-deserved fame. The oversize Queens fish is now 43 years old – earning him bragging rights as the oldest pet fish in town.

Black pacu – Colossoma macropomum are large South American characins that, though distantly related to piranha, are mostly vegetarian and harmless. This individual is particularly long-lived.

Read more here – NYDailyNews

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Following on from my list of fish suitable for beginners, here is a list of fish, all commonly available in pet shops, to avoid. Whilst most would agree with my list of best fish, this list is a little more contentious. Some of the species I’ve selected will come as a surprise and many will disagree with my choices. See what you think. (more…)

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