A Singapore public aquarium has tagged some its fish with RFID microchip tags to help visitors identify different species as they swim past.
Underwater World in Singapore has tagged around 20 fishes with Radio-frequency Identification (RFID) tags or transponders which send a signal to digital displays in front of the aquarium.
Rather than needing to match the picture of the fish to the species swimming around the tank, as you do at most public aquariums, pictures and information on the RFID tagged fish appears on touch screens as they swim past a special sensor.
So far, only the larger freshwater fishes in the Amazon exhibit, such as Arapaima gigas, freshwater stingrays, Red tail catfish and pacu, have been tagged, but the aquarium may extend the programme to its marine fish displays.
The tagging system has cost S$30,000 to develop.
RFID tags can be read from several metres away and are increasingly being used to tag groceries and other products.
A number of people have also implanted RFID tags under their skin to allow their movements to be tracked, too.