Washington, D.C. 20549

                                    Form 8-K

                 Current Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                                 August 2, 2004

                Date of report (Date of earliest event reported)

                              Cyanotech Corporation

             (Exact name of registrant as specified in its charter)

NEVADA                          000-14602                       91-1206026
(State or other          (Commission File Number)            (IRS Employer
jurisdiction of                                         Identification Number)

       73-4460 Queen Kaahumanu Highway, Suite #102, Kailua Kona, HI 96740

                    (Address of principal executive offices)

                                (808) 326 - 1353

                         (Registrant's telephone number)

                                 Not Applicable

          (Former name or former address, if changed since last report)

Item 12  Results of Operations and Financial Condition

         Attached hereto as Exhibit 99.1 and incorporated by reference herein is
         financial information for Cyanotech Corporation for fiscal year 2005
         first quarter (ended June 30, 2004) and forward-looking statements as
         presented in a press release of August 2, 2004. The information in this
         report shall be deemed incorporated by reference into any registration
         statement heretofore or hereafter filed under the Securities Act of
         1933, as amended, except to the extent that such information is
         superceded by information as of a subsequent date that is included in
         or incorporated by reference into such registration statement. The
         information in this report shall not be treated as filed for purposes
         of the Securities Exchange Act of 1934, as amended.



Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                 CYANOTECH CORPORATION (Registrant)
       August 2, 2004        By: /s/ Jeffrey H. Sakamoto
                                 Jeffrey H. Sakamoto
                                 Vice President - Finance & Administration
                                 (Principal Financial and Accounting Officer)


                                  EXHIBIT INDEX

Exhibit Number                            Description
      99.1       Press release dated August 2, 2004