Washington, D.C. 20549

                                    Form 8-K

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

                                February 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 jurisdiction of  (Commission File Number)     (IRS Employer
          incorporation)                                  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 the quarter ended
         December 31, 2003 and forward-looking statements as presented in a
         press release of February 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         amended, except to the extent that such information is superceded by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)
      February 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 February 2, 2004