CCNET for the most part follows base MCMMO loot tables and values, however when it comes to fishing, the loot tables on CCNet have been edited to remove Netherite Armour for balance reasons (Fishing would give you prenerf netherite gear)
This is a major blow to endgame fishmen because we're suddenly short of a desired drop with no replacement or compensation buffs.
Here are the loot tables according to the mcmmo wiki and the droprates
https://media.discordapp.net/attachments/1221607190381461634/1221607240998322337/image.png?ex=661c6be6&is=6609f6e6&hm=38f2132a68ebf412298358d8470cf1158c25a04a7cad7f59945accebda4ccaa9&
Even a small adjustment to the rates would help fishers a lot. Currently it's more beneficial to stay in the level 500-750 range due to gold armour drops than it is to go to 1k and have a 1/400 chance to fish up a netherite hoe...
I would suggest:
Possibly make it so Uncommon rates don't fall off at later ranks and maybe buff Mythic Droprates slightly?