Oops! This is embarrassing
We don't have much data for Rain right now, if you have some to share please post a comment for others kupo!
Located at the "Middle Thaliak River" fishing hole in The Dravanian Hinterlands, x21.3, y22.3.
Time of Day: 2am-6am
Weather: http://xivdb.com/weather/7/rain -> http://xivdb.com/weather/8/showers
Bait: http://xivdb.com/item/12706/goblin+jig or http://xivdb.com/item/12711/brute+leech
Folklore Book: http://xivdb.com/item/12702/tome+of+ichthyological+folklore+-+dravania
Caught with 776 Gathering, 645 Perception.
You must mooch a High Quality http://xivdb.com/item/12780/sweetfish in order to catch this fish. Mind the weather! You can only catch this when Rain transitions into Showers, so it's a rare weather pattern. Otherwise, it's a fairly good catch rate and it shouldn't be much trouble.