The 29-year-old, who has denied the charges, immediately announced he would appeal against the Pakistan Cricket Board (PCB) decision.
"I would not make any other comment, but I am going to appeal," Akhtar said.
His reported disco visit, the pictures with girls which appeared in the Australian media, his delayed return home, and his hiring of a private trainer prompted the PCB to set up a three-member inquiry committee.
Their punishment does not bar him from the Indian tour, but the leading Pakistani bowler's place was still in jeopardy after failing to shake off a hamstring injury he picked up in Australia.
Akhtar received the fine and a warning not to step out of line again at a PCB disciplinary committee headed by a retired judge at Lahore's Gaddafi stadium on Thursday.
"Akhtar was charged for visiting a disco on the tour of Australia, for returning home late, for issuing media statement on his return and for hiring a private trainer," PCB's legal adviser Asgher Haider said.
"He was found to have committed indiscipline for which we have penalised him and warned him to maintain discipline in future but the action is not linked to his selection for the tour of India," said Asgher.
Akhtar was to appear before a medical commission on Saturday, when Pakistan announces its squad to play three Tests and five One-day games in India.
The PCB had also directed Akhtar to play a four-day first class match this week to prove his fitness but he failed to comply with their demand.