At level 50 Fishing the daily provisioning items take over an hour to obtain using ilvl 55, materia-enhanced gear... Meanwhile, the fish you end up catching other than what you're actually needing to catch don't sell, some of them don't even have uses, and if you just sell them all to an NPC it doesn't cover the cost of bait and equipment repairs. The number of fish required for provisioning at lvl 50 desperately needs to be reconsidered.