This benthic fish species was found very shallow sea grass bed of southern coast of Sri Lanka.
Your identification as Istigobius ornatus (Rüppell 1830) (family GOBIIDAE) is correct.
You may consult the revision of Istigobius by Murdy & Hoese (1985), who recorded the species from Sri Lanka, for further information:
Murdy, E. O. and D. F. Hoese 1985
Revision of the gobiid fish genus Istigobius. Indo-Pacific Fishes No. 4: 1-41, Pls. 1-3.
Other species of the genus in Sri Lanka are Istigobius decoratus and I. goldmanni. Neither of these has several rows of dark streaks above the lateral line.
Dear Dr. Ronald,
Thank you very mush for the information. I will read the the revision of Istigobius by Murdy & Hoese (1985).
Also, try to catch Istigobius decoratus and I. goldmanni.
Best regards
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