Studolodon

The LEGO Event 2025 brought Studolodon, which arrives during a Studolodon Hunt: it spawns in numbers at various locations and the game announces ‘A STUDOLODON has been spotted near island!’ The bait is Stud Bait, and any weather works.

It is a heavy one: 33 kg at the lightest, an average near 160 kg and a ceiling of 200 kg. That ceiling puts it 61st among 240 Limited fish and 306th of the 1,059 fish that list one. O'Mango Goldgrin tops its neighbours at 250 and Tentabrick follows at 210, Headless Halibut ties it at 200, and Royal Tigerfish trails at 165.9.

Hooking one comes with a -85% progress speed penalty. It is also a quest item, because one Studolodon is needed for the Azure Brick Backpack quest. The quote calls it a prehistoric beast with massive LEGO brick plates, a plastic legend, and the quips are ‘A STUDOLODON!!’ and ‘Brick-Built Beast!’ According to the wiki it is based on a real set, the LEGO Creator 3 in 1 Deep Sea Creatures, so you can build your own at home.