Jason Langhans died at The Alfred hospital on Saturday when his family turned off his life support, three weeks after he was seriously injured when gatecrashers stormed the Tooradin party he was at.
“It’s crazy to think how one night and one person’s actions can literally change your life forever,” his sister Stacey posted online.
She said the last few weeks without Jason had been the “longest of my life”.
“I love you now and I’ll love you forever, but please it is time to wake up now my life is not the same without my not-so-little brother,” she said.
The Cranbourne North boy’s mother Carolyn Langhans said her son was always on her mind.
“Jason you were our whole life and not a day will go by without us thinking about you and wishing you were here, we love you so much and our lives feel so empty,” Ms Langhans wrote on Facebook.
“Jason you put up a good fight but unfortunately, it was your time to go and now you’re no longer in any pain.”
A friend said he was speechless at loss of Jason, who loved fishing.
“RIP Jason, I’m lost for words … it kills me to hear that you aren’t here with us anymore and that we can’t go fishing together like we always talked about,” the Facebook post read.
“My heart’s aching … I’m in so much disbelief, it’s so unfair what’s happened. I love you heaps, fly high brother.”
The altercation took place at Station Road in Tooradin, south-east of Melbourne, in the early hours of March 21.
A crowdfunding page was set up while the teenager fought for his life in the ICU.
“Fun-loving Jason had big dreams, turning 18 in July looking forward to getting his licence to follow his passion of 4WD and catching that prize fish,” the fundraiser read.
“In this hard time, his family need all the support they can get.”
Homicide Squad detectives are investigating reports a group of men became involved in an incident with Mr Langhams which escalated to a physical altercation.
The investigation remains ongoing and those believed responsible remain at large.