Asura.Flufferkins said:
http://wiki.ffxiclopedia.org/wiki/Matsya
Research before you Q.Q
I could say the same to you. If you actually researched Matsya you'd realize it's actually a really slow way to make money. Here's what it came down to.
You need ex bait and mooching to even fish it let's ignore the guildpoints and just focus on the ex bait.
In about 20-22 hours of solid fishing you can fish up the old cap of 220 cave cheraux with ebisu. My average turn in rate was 1/3. So that means about 73 bait.
Now let's start actually fishing. On average after I started actually pulling up items to save bait and fishing up monsters with composure sneak up, I would take about a stack of bait for each matsya fished up. Which would end up taking about an hour or so. So that means with that 73 bait I'd get maybe 6 matsya in 6 hours.
You get 900 gil turning in the fish and 25k for npc matysa. That comes out to 198k total gil made in about 26 hours time. Not good money by any stretch of the imagination. You'd actually make more money fast just selling the cave cheraux. Or ya know fishing up trumpet shells. If people are buying Ryuga titans aren't bad either