Middlesbrough and Swansea City have each been fined £5,000 for failing to ensure their players conducted themselves in an orderly fashion.
The Football Association said each club "accepted the standard penalty".
Swansea defender Ben Cabango was sent off following an 87th-minute clash with Isaiah Jones, which led to a melee involving players from both sides.
Cabango was shown a second yellow card for shoving Jones to the ground.