This server is called Bone Voyage SMP RPG and it is working on a big Fishermans Guild update. The owners showed off a bunch of custom fish and crafting items that they are making for the fishing system.

Right now they already have custom fish like anglerfish shark squid clam clownfish and jellyfish. Some of them even have different cool variants. There is also a full tier system for fishing loot with legendary epic rare uncommon common and junk so what you catch matters a lot.

They are adding special crafting drops too like anglerfish bulbs clamshells shark teeth shark fins and jellyfish jelly. These will be used for new gear food and other items like armor necklaces soup and lanterns. Most of this is still in development and not fully available yet except the shark and its recipes.

The server feels like an RPG style survival world with a big focus on custom fishing content and expanding it over time. They are planning more fish materials roaming 3D fish and better fishing rods so the whole fishing side of the server will keep growing.