Verdant Mirage

Verdant Mirage is a Secret-tier catch from Azure Lagoon that sells for C$17,500 on average. That ranks 94th of 742 documented fish by value, which puts it in the top eighth, and it awards 15,500 base XP, a very large amount of experience for a single catch.

It weighs 480 kg to 2,520 kg, averaging 840 kg, at C$20.833 per kg. By maximum weight it ranks 133rd of 663, so this is a heavy fish whose price tag comes from both size and rate.

The conditions are tight: Luminous Larva bait, Day, Foggy weather and Autumn. That means you can only attempt it on foggy autumn days, and you will need the specific larva. No other fish is listed alongside it in Azure Lagoon, so you are not fighting anything else for the slot.

The game describes a dark cyan fish with bright light blue accents, a mirage in the lagoon's heart.

Verdict: a top-priority target for anyone who can reach Azure Lagoon. Over C$17,000 and 15,500 XP per catch justify building a plan around it. Stock Luminous Larva, wait for Autumn and fog, and treat every attempt as worth the setup.