West Coast set-net fishing
In contrast to the East Coast, where fishermen decide when to bring up the nets according to the speed of the current, on the West Coast of Taiwan what matters most is the state of the tide, says Zheng Mingfa, operator of the Mingfa set-net fishing ground off Hsinchu. The average period from one high tide to the next is around 12 hours and 25 minutes, and fishers need to carefully choose when to put to sea according to this cycle.
To increase the number of times each day that fishermen can bring up a catch, Zheng Mingfa developed a unique “two-ended single-chamber set net.” This makes it possible to alternately catch fish in the holding chambers at opposite ends of the net system as the tide rises and falls.
The nets are the vitals of any set-net fishery and are an important partner for fishermen. Therefore set-net fishing grounds have a rest period from July to August each year, not only to avoid typhoons but also to take the opportunity to clean the fishing gear.
Each set of nets is under water for about ten months a year. Although the fishing gear provides a manmade habitat where sea creatures can thrive, the gear itself can be adversely affected by these “residents.” In particular, excessive growth of barnacles and seaweed can make the gear too heavy, thereby interfering with judgments about when to haul up the catch.
To deal with this problem, fishermen spend two or three days gathering the enormous nets on shore, where they first use high-pressure water jets to clean away the marine organisms that have attached themselves to the fishing gear, and then repair areas of damaged mesh.
Typhoons represent a great threat to set-net fishing gear, as Zheng Mingfa can personally attest. In the past he took the risk of leaving his nets in the water for an extra few days in order to catch more high-value demersal (bottom dwelling) fish, never expecting that his fishing gear, worth over NT$10 million, would be completely swept away overnight. Though these incidents are long in the past, he still vividly remembers the two occasions when he suffered heavy losses in this way.
Nonetheless, these setbacks by no means extinguished his enthusiasm for set-net fishing.
As well as putting out information on social media, Zheng Mingfa has also acted to enable members of the public to see for themselves the process of bringing up a net full of fish. He invested heavily to buy a sightseeing boat so that not only can consumers eat the freshest catch, they can see the fish leaping in the net with their own eyes. Moreover, Zheng works with educational organizations in hopes of informing more people about set-net fishing.
Fishermen repairing damaged net meshes.
Zheng Mingfa’s design of a set net with a single holding chamber at each end of the heart increases the number of catches that can be landed each day.
Two-ended single-chamber set net (source: Mingfa set-net fishing ground)