Australian vice-captain Adam Gilchrist has been found guilty of dissent and fined 50% of his match fee.
Symonds (right) escaped censure, Gilchrist was not so lucky
Team-mate Andrew Symonds was cleared of a similar charge after an hour-long hearing in Colombo, Sri Lanka.
The two players were involved in an incident in the second one-day international against Sri Lanka.
They were batting together when umpire Peter Manuel ruled Symonds out lbw.
Both players complained and Manuel brought the batsman back.
Sri Lanka went on to win the match and level the five-match series 1-1.
International Cricket Council referee Mike Procter said: "I feel sorry for Adam because he is a very fair cricketer but I took everything into consideration, including the fact that this was his third offence.
"Andrew Symonds was found not guilty as there is a very fine
line between disappointment and dissent. I have said before that
I do not expect players to be robots."
With Australia precariously positioned chasing 245 on a dusty Dambulla wicket, Symonds played across the line to a Kumar Dharmasena delivery, edging the ball into his pads.
Manuel immediately ruled it out and Symonds, after protesting the decision, began the walk back to the pavilion. Gilchrist, at the non-striker's end, had a heated discussion with the umpire.
But as Symonds was leaving the field, Manuel consulted Bowden at square-leg - the New Zealander confirming the ball had indeed struck Symonds's bat.
Accordingly, Manuel informed Atapattu of the error then called Symonds back to resume his innings.
Gilchrist was fined in almost identical circumstances in a day-night match in Bangalore three years ago.
Sri Lanka, meanwhile, have named an unchanged squad for the third and fourth matches in the best of five series.
The next takes place in Colombo on Wednesday and the hosts are considering leaving out wicket-keeper Romesh Kaluwitharana to accommodate either batsman Saman Jayantha or seamer Nuwan Zoysa.
If Kaluwitharana is left out, Kumar Sangakkara would take over behind the stumps.