The Reds are back into the automatic promotion places as they see off Fleetwood in a six-goal thriller.
Goals from Mike Bähre, Cauley Woodrow, Cam McGeehan and Jacob Brown saw the Reds to an important home victory at Oakwell this afternoon.
Head Coach, Daniel Stendel had made three changes to his starting lineup with Bähre, Jordan Williams and Adam Jackson brought into the side at the expense of Ryan Hedges, Dimitri Cavaré and the injured Liam Lindsay.
In the opening stages, it was probably the visitors on top, with Ashley Nadesan squandering a terrific chance on 10 minutes, but after the game settled down, Barnsley's quality began to shine through.
On 21 minutes, it was the Reds' number 21, Bähre, who broke the deadlock when after great work out wide right by Brown, the German midfielder fired home from a few yards out to notch his first league goal for the Reds.
Alex Mowatt tried his luck from an acute angle, following Dani Pinillos' throw-in and the effort missed the post by an inch.
The lead was doubled on 34 minutes as Woodrow had a second bite of the cherry inside the box and finished in style for 2-0.
HALF TIME: Barnsley 2-0 Fleetwood
On 62 minutes a terrific stop by the skipper, Adam Davies who denied Nadesan with a fine save one-on-one.
But just two minutes later and the away side's pressure paid off as Ched Evans knocked home a loose ball from a corner.
Immediately at the other end, Harry Souttar was dismissed for jumping with an elbow into McGeehan.
And five minutes later it was 3-1 as McGeehan headed home after great work on the left flank from Mama Thiam.
But Town struck back on 77 minutes when Wes Burns headed in at the far post but three minutes later it was game over as Brown met Pinillos' cross at the back stick, a first-time volley that beat Alex Cairns low down, between his legs.
A huge victory for Stendel's men as the race for promotion intensifies.
FULL TIME: Barnsley 4-2 Fleetwood
Davies, J.Williams, Pinnock, Jackson, Pinillos, Brown (Green), Mowatt, McGeehan, Thiam (Hedges), Bähre (Styles), Woodrow.
Unused: Walton, Fryers, Cavaré, Adeboyejo.