The Pixel Shark is a RARE pet that is obtainable from the Spotted Pixel Egg, with a 4% chance of hatching. This pet was added in the Pixel World update.
The latest Pet Simulator X value list for Pixel Shark can be found below:
💎 1,350,000 (1.35m)
💎 3,900,000 (3.9m)
💎 12,000,000 (12m)
💎 37,500,000 (37.5m)