Fishing Materia

My question is before i start attaching all this materia to my af. Ive noticed on gathering classes there is a cap on gathering hq items, normally 15% for me on 40 botanist unless I use an ability that increases it further. Anyone know if it's the same 15% on fisher or not, trying to figure out if it would be more beneficial to put perception on my gear or all gathering. Stands to reason that if i go all perception I would hit a cap no matter how much materia I put on my gear, or would it be more beneficial to load up on gathering to catch fish faster giving me more chances at HQ in the long run or am I going about this all wrong? Anyone have any input?

I don't think the game has been out long enough for the data you are looking for to exist. We don't know the max HQ rate for catching fish. You could try testing it out yourself if you don't mind going down to level 1-5 fishing zones and spending some time catching lower level fish and recording the data to calculate your HQ rate, with high level gear that isnt even capped on perception you should be able to hit a HQ cap if there is one.

From personal experience it seems to be around the 20-25% area. Which would make sense seeing as Fishing doesn't have a hq buff like Bot/Miner.