subtypes

Mandatory traits:  Any Aquatic subtype trait or subtype special weapon.

Special subtype traits: Fins, Gills, Barbel, Waterfall Tail (Do not count into MYO traits limit)

Special Tail Weapons: Harpoon gun. (This doesn't mean other types of weapons can't be used. Legendary subtypes can use any weapon from lower rarity and even make it special looking based on subtype.)