Leedsichthys

Leedsichthys is a colossal, plankton-feeding fish from the Jurassic period, around 165 to 150 million years ago, and the game counts it among the largest fish that ever lived. In Fisch it is a Legendary catch of Ancient Isle, taken with Squid in Foggy weather during the Day, in any season.

Size is its calling card. The average one weighs 1,786.8 kg and the heaviest recorded reaches 2,657.9 kg, ranking 132nd of 663 for weight. Yet the sale is C$3,000, 228th of the 742 documented fish by average value, at just C$2 per kg. It gives 1,500 base XP. So this is a fish that looks enormous and pays like a mid-tier catch.

Dunkleosteus and Ginsu Shark share its rarity in Ancient Isle, and the zone sells Krampus's Rod, Phoenix Rod and Stone Rod. The right way to treat Leedsichthys is as a dependable, condition-light Legendary: no hour restriction beyond Day, no season gate. It suits players who want a reliable Legendary payout and decent XP without waiting for rare weather. If you want the best return per catch, there are higher-value options, but few are this easy to schedule around.