From Pixelmon Wiki
A Net Ball is a somewhat different Poké Ball that has a 3.5× catch rate on Water and Bug-type Pokémon. It can be obtained by crafting it, buying from a shopkeeper, or as a tier 1 special drop,
Net Balls are crafted similarly to other Poké Balls.
|Net Ball Lid||Cooked Black Apricorn +
Cooked Blue Apricorn
|Net Ball||Net Ball Lid +