Well this is "The Competition With No Prize"

All you win is the eternal worship of your fellow posters for being a smarty-pants or just being a lucky guesser.
Look at this rather cool idea below and tell me what year this was published in the British magazine "The Aquarist".
The competition runs until someone gets it or we all grow disinterested

Rules: 1) A maximum of 1 guess per day per person.
..........2) See rule 1
Martin.