** Commercial abalone ranching developer's shares OGA.AX
rise as much as 6.3% to A$0.085, their highest since May 4
** Co says April's revenue of A$553,000 ($429,238.60) is
highest monthly sales revenue ever urn:newsml:reuters.com:*:nASX2S1nrm
** Stock on track to post second consecutive session of gain
** About 208,000 shares change hands compared to the 30-day
average volume of about 69,000 shares
** OGA down 20% this year, as of last close
($1 = 1.2883 Australian dollars)
(Reporting by Aditya Munjuluru in Bengaluru)
((aditya.srivastsav@thomsonreuters.com))