Archive for September, 2010

University of Maryland biologists have identified how changes in both behavior and genetics led to the evolution of the Mexican blind cavefish (Astyanax mexicanus) from its sighted, surface-dwelling ancestor.

Astyanax mexicanus, normal Form and blind Cave...

Image via Wikipedia

The blind cave fish of Mexico – Astyanax mexicanus is a popular and unusual aquarium fish. It’s one of around 80 species of blind cave fish found throughout the world. What makes this fish really interesting is that the fish from which it evolved is still swimming around in the surface waters of Mexico. In fact the blind form has evolved so recently that full speciation has not yet occurred and the two forms, sighted and blind, are considered to be the same species and can even interbreed.

Read more here – Science Daily.


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2010 Open Show and Auction

Sunday the 26th of September – Fair City Aquarist Society Open Show and Auction

A.K Bell Library
York Place

Google Maps


Fish entries from 10am with judging starting at 1pm (USA rules). Public viewing when judging is complete with presentations shortly after. This is generally around 4:30pm.


The auction starts at 12 noon. Some of the rarest livebearers and catfish in the country will be available at keen prices. Fish suitable for a community aquarium will be sold for prices typically less than half of that found in the shops.

Some examples of fish that will likely be for sale:

Poecilia wingei, Endler's Livebearer

Endler's guppies - Image via Wikipedia

Also various cichlids, killifish and plenty of plants and second-hand equipment.

Canteen facilities are available.

For more information contact Graham Geddes
Tel: 07547812229
E-mail: graham.geddes@faircityaquaristsociety.co.uk

The schedule is here

The entry form is here

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This week’s word is substrate.

Pronounced – SUB strait

Meaning – the material or surface layer in which plants grow.

Origin – from the Latin words sub – under and stratum – layer.

Example usage – Many catfish need a fine substrate such as sand rather than a sharp-edged material like some types of gravel.

Trivia – the word was originally “substratum”.

Sandy areas are a favored habitat for the comm...

Stingrays like a sandy substrate

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Again there were about a dozen members in attendance for Table Show 4.


Some more gifts have been received for our Annual Open Show and auction on the 26th September.


It was the fourth Table Show of the season. The results can be viewed here and the latest league table positions are on the Table Show page.


Bag of 2 bristlenose – £2

Next Meeting

Thursday 23rd September – Open Show final arrangements. (At Graham Geddes’ house)

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Barbus candens is a small African barb described by John Treadwell Nichols and Ludlow Griscom in 1917. It was collected by Herbert Lang and James P. Chapin near Stanleyville (now known as Kisangani) during a six-year expedition to The Belgian Congo (now called The Democratic Republic of the Congo). (more…)

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