Crime Stoppers is offering up to $5,000 for information leading to the arrest of Rosalio Anthony Barraza, 18, who is accused in the shooting death of Isaac Arrocha.
A warrant has been issued for Barraza's arrest.
Isaac would have celebrated his 26th birthday on Friday. He was shot six times on the morning of July 20 near General McMullen and Weir Avenue.
"Pure hell, it's pure hell," said Leroy P. Arrocha, Isaac's father. "It's very hard to get up in the mornings knowing my son is not going to be there."
"I wake up happy and then I remember that he's not here anymore," added Isaac's mother, Linda Arrocha.
The shooting happened during an apparent argument, but Isaac's family says they do not know what he and Barraza might have been arguing about.
The two were acquaintances but not friends, according to the Arrochas.
There were several witnesses to the shooting.
Isaac leaves behind an 8-year-old son, who his family says is still in disbelief over his father's death.
The family hopes Barraza will be in police custody soon.
"We're asking for justice for my son," said Leroy. "We're asking that he turn himself in so we can all have closure this holiday season."
"I don't want anybody going through what we've gone through," said Linda.
If you have any information, you are asked to call Crime Stoppers at 210-224-STOP.
Tips can be made anonymously.