It's all about the fish

Tropical, Coldwater, Marine, Freshwater... whichever your preference, aquariums are popular things. I have one myself - a 2 foot tropical freshwater tank. They're fascinating, addictive and also immensely frustrating, but i'm definitely hooked! For some people the hobby becomes an obsession. Nothing is too big (or small) a challenge, hence the brilliant palmtop aquarium:



When the smallest fish in the world was discovered, the challenge went out to find a suitable aquarium to house it. The result is this tiny tank, made from a bird feeder less than 100ml in volume, with sand, mini rocks and java moss. Beautiful!

The website (Age of Aquariums) also features an aquarium made from a cracker box, and one from a lightbulb.