The craze began on Tuesday when restaurant chain Akindo Sushiro said any customer whose ID card contained ‘Gui Yu’- the Chinese characters for salmon – could get all-you-can-eat sushi for themselves and five friends.
This led to dozens of people requesting a name change.
Legally people in Taiwan can change their name up to three times.
But Taiwanese officials were unimpressed.
The Deputy Interior Minister Chen Tsung-yen told reporters: “This kind of name change not only wastes time but causes unnecessary paperwork.”
He added: “I hope everyone can be more rational about it.”
According to the Taipei Times applicants pay around $3 (NT$80) for a new ID card and a registration certificate.
One student in Taichung said she had changed her name to “Kuo Salmon Rice Bowl” but planned to change it back the next day.
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