Landlord Mr Jones, 46, died at The Blossoms public house in Holyhead on Friday afternoon.
Following a stand-off with police on the roof of a neighbouring pub, a 24-year-old man was arrested on suspicion of murder. He remains in custody
A family tribute read: "A partner, soul mate, father, brother, uncle and our best friend. We love you."
A post mortem examination was carried out on Saturday but North Wales Police say they are not releasing Mr Jones's cause of death yet.
Officers have made a specific appeal to speak to people who were on board the number four Arriva Bus which left Bangor bus station at 14:00 GMT on Friday and arrived at Summerhill in Holyhead at about 16:00.
Det Chf Insp Iestyn Davies said: "It is understood that the bus was caught in traffic around the Black Bridge area of Holyhead as events at the Blossoms public house were unfolding."
The man whose death at an Anglesey pub sparked a murder investigation has been named as David Jones.