The teenager was last seen at 9:30pm on Saturday 18 April 2020 in Venezia Promenade, Greenvale.
Joaquin was last seen wearing a white windcheater, blue jeans, white Adidas runners, carrying a bag and in possession of his mobile phone.
Police and family are concerned about Joaquin’s welfare as his disappearance is out of character.
Joaquin is described as Caucasian in appearance, about 187cm tall, brown curly hair, green eyes, with a thin build and has wide shoulders.
Anyone who sees Joaquin is urged to contact Fawkner Police Station on (03) 9355 6000.