Joshua Bradley, 19, of Bulwell, died after the fight in Thurland Street on 8 February.
A 22-year-old man has been arrested on suspicion of murder.  Six people were arrested in connection with Mr Bradley's death on Tuesday.
Richard Johnson, 24, of Belton Street, Hyson Green, has already been charged with Mr Bradley's murder.
Two men, aged 21 and 19, were arrested on suspicion of murder on Tuesday.
A 29-year-old man and two women, aged 27 and 28, were arrested on suspicion of assisting an offender.
Another man, 19, who was arrested on suspicion of murder was released without charge.
Last month, three men were also charged with violent disorder in connection with the brawl.
Seven people have been arrested in connection with the death of a young boxer in a street brawl in Nottingham.