漁業

1. Origins, structure, and basic meaning

• Structure: 漁業 (ぎょぎょう) is the industry of catching or raising aquatic resources. 漁業が盛んだ describes an industry; 漁業に必要な道具 defines equipment use.
• Basic usage: Fishing is a long-standing port-town industry, and tools needed for it are maintained in a warehouse.

2. Common pitfalls and similar expressions

• Prominent local industry and purpose of work equipment
  • が盛んだ evaluates industrial activity; に必要な limits what the tools are for. The scope is livelihood and industry rather than recreational fishing.