Banc

“Le Pokémon se rassemble avec ses congénères\nquand ses PV sont élevés. Quand il ne lui reste\nplus beaucoup de PV, le banc se disperse.”

If this Pokémon is a Wishiwashi and level 20 or above, then when it enters battle and at the start of each turn, it becomes Schooling Form if its HP is 25% or higher and Solo Form otherwise. This ability cannot be replaced, copied, or nullified.