Primordial Levi

Primordial Levi is gone from the game for now. It was an Extinct fish from Lushgrove in the Second Sea, and it is flagged Unobtainable, so there is no way to catch it today. The in-game description paints a near-black fish with bright red accents, its menacing form a relic of a primal age.

When it could be caught, it needed Luminous Larva, Night, Windy weather and Autumn. Its weight ranged from 270 kg up to 8,946 kg, averaging 825 kg, and at C$10 per kg an average fish was worth C$8,250, with 600 base XP attached. By average value it ranks 139th of the 742 documented fish, and its 8,946 kg ceiling puts it 92nd of 663 by maximum weight.

The only other Extinct fish documented in Lushgrove is Bogscale, which is the nearest comparison inside the same zone.

What to take from this: the XP was low for the price tag, since 600 XP is small next to the C$8,250 average, so this fish was a money catch more than a leveling one. If you hold one, its value is roughly C$8,250 at average weight and more if heavy, and since it cannot be replaced you may prefer to keep it. Otherwise, there is nothing to hunt, so look at Bogscale or other Lushgrove fish instead.