Archive for June, 2010

Male molly fish in Mexico wear a moustache that makes them appear more sexy to females. Scientists were unsure why male Mexican mollies wear an extravagant moustache-like structure on their top lip. Now a study has revealed that female fish find the moustache sexually attractive, and it is likely to be a sexually selected trait.

Apart from an interesting piece on sexual selection this news item also highlights how little we know about even the most familiar of our fishes. Mollies – Poecilia sphenops, are sold in every tropical fish outlet the world over but not a single one has this ‘moustache’ and few, if any, hobbyists know that it occurs on wild fish.

It just goes to show, you never stop learning in this hobby.

Read more here.


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A conversation at last week’s meeting, which itself was sparked by a question in the quiz the week before has brought me back to the subject of scientific names.

The question was – what colour of eyes has the emperor tetra? The answer is – depends what you mean by emperor tetra. There are three or four species of fish known in the hobby as emperor tetra and this is where the confusion lies. (more…)

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Thursday 17th June was the second Table Show of the new season and almost 20 fish-keepers were there on the night. This despite football being on the TV and it being a beautiful summer’s evening. (more…)

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Corydoras Paper models

Some rather nice paper models of corydoras are available for free download from the “I love corydoras” web site here.

Click on the numbers in the top right to get the instructions. I’ll post a picture when I get some glue and make one!

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The first of what I hope will be a weekly post about fish-related words and phrases. I guess I should call it “Word or phrase of the week” but that’s not quite as snappy. I’ve always been interested in words and their origins so this is doubly enjoying for me.

Anyway this week’s word is lacustrine.

Pronounced – Lah-KUSS-treen

Meaning – relating to or living in lakes.

Origin – from the latin word lacus, meaning lake.

Similar words – riverine (relating to or living in rivers) and marine (relating to or living in the sea, the latin word for sea being mare).

Example usage – Malawi cichlids and other lacustrine fish often practice mouth-brooding as part of their reproductive strategy.

Trivia – The specific name of The Lake kutubu rainbowfish – Melanotaenia lacustris has the same meaning.

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Corydoras carlae is a small catfish from the drainage of the Rio Iguazu in North Eastern Argentina. Described by Nijssen & Isbrücker in 1983 from material collected by JP Gosse in 1977. It has not been seen in the hobby up until now. (more…)

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Getting well into the light evenings and another high turnout. Much chat beforehand about the various fish kept by all the club members. (more…)

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