The Football Association fined Liverpool and Everton following a “mass confrontation” during the Merseyside derby on 13 February.
The incident happened in the 86th minute of Liverpool’s 2-0 Premier League victory at Anfield.
Both clubs failed to ensure their players “conducted themselves in an orderly manner and refrained from provocative behavior,” according to the FA.
Liverpool was fined £25,000, while Everton was fined £40,000.
Following a previous charge during a home game against Crystal Palace earlier this season, the Toffees received a harsher penalty.
The incident involved players from both teams, including some substitutes.
It came after an altercation between Andrew Robertson and Everton goalkeeper Jordan Pickford, with both players receiving yellow cards for their roles.
“An Independent Regulatory Commission imposed their fines during a subsequent hearing,” the Football Association said in a statement. “Its written reasons will be published in due course.”