If you have come to New Zealand to work as crew on a fishing vessel you need to pay tax on the money you earn.
Your employer will take the tax out of your wages before they pay you.
Who are overseas fishing crew?
Skilled fishing crew from overseas who come to New Zealand to work on vessels in New Zealand waters.
You need a Fishing Crew Work Visa to do this job. You can only work for the employer named in your visa. Talk to your employer about getting a visa. You can also read about it on Immigration New Zealand’s website.