利兹鱼可能是岛屿周边水域体型最大的鱼类了。而其肉质极为鲜美多汁，就体型来说可真是一个惊喜。 它的肉类通常与优质肉的交易价格相当，也因此经常被称为“优质鱼”。当然，并不是所有的利兹鱼肉都拥有如此的高品质，不过至少大多数都是！ 尽管人们对于利兹鱼肉的需求量非常大，但利兹鱼可是出了名地难以追踪并猎获的。其不单单拥有大块的体型、强力的攻击和难以置信的速度，此外人类对于开放水域的水性劣势，让猎杀利兹鱼成为最有难度的任务之一。 利兹鱼也拥有极好的感官系统，经常探测来自几英里之外的水的振动。水中的大型运动物体，如筏子，往往会使其感官超负荷，从而使它们变得恼火。然而，人们发现蜂蜜的粘度可以混淆它们的感官系统，并转移它们的注意力。 事实上，猎杀一条利兹鱼是岛上比较困难的任务之一。猎杀传说中的“大型白化”利兹鱼——这种极其难以捉摸鱼类的行动已经让男男女女无比着魔，仿佛这种鱼类被恶魔附体，具备人格化的特征且能被实际伤害到一般。
Common name: Leedsichthys
Species: Leedsichthys conviviumbrosia
Time: Mid Jurassic
Leedsichthys conviviumbrosia is the largest fish in the waters around the Island. Its meat is also extremely succulent, a surprise given its size. It is often traded with the same value as Prime Meat, and colloquially called "Prime Fish." Of course, not all of Leedsichthys' meat is this high quality, but most of it is! While the demand for Leedsichthys meat is high, the fish is notoriously difficult to track and hunt. Between its large size, powerful attacks, incredible speed, and humankind's general ineptitude on open water. It also has an excellent sensory system, often detecting vibrations in water from miles away. Large moving objects in the water such as rafts tend to overload their senses and cause them to become irritated. However, the viscosity of honey has been known to confuse its sensory systems and distract them once agitated. Actually killing a Leedsichthys is one of the Island's more difficult tasks. The hunt for an extremely elusive breed of the fish, the fabled "Great Albino" Leedsichthys has been known to drive otherwise-sensible men and women mad with obsession, as if all evil were visibly personified and made practically assailable in this one creature.