Relocating Tsukiji market, home to the world's largest fish bazaar, is not as easy as transporting a box of tuna from one wholesaler to another by pallet truck.

It is clear that nobody is in a rush as the middle traders move around on their mini-trucks through the market in the heart of Tokyo.

And although the metropolitan government has decided on the relocation and plans to finish construction by 2012, the plan has hit a snag, due partly to environmental concerns at the proposed relocation site on Toyosu wharf.