Thanks for the info Grekumah.

Nepto Dragon was actually really easy to catch for me. I got 3 of them during two 8 Eorzea hours long fishing sessions. One of them was with 409, another with 411 gathering. RNG could be RNG of course, so good luck!

The only fish I'm still missing other than the elusive Coerthas legendary is Blood-Red Bonetongue. Not only the precondition is the extremely rare double weather plus time frame combination, but after 10+ windows I haven't even seen a single bite yet... This seems a bit excessive, and I suspect one of these conditions may not be really required. Can you guys share any info if you have managed to get this fish?