UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

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

December 6, 2004

Date of report (Date of earliest event reported)

Cyanotech Corporation

(Exact name of registrant as specified in its charter)

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)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 7.01. Regulation FD Disclosure

The following information is being furnished, not filed, pursuant to Item 7.01.  Attached hereto as Exhibits 99.1 and 99.2 and incorporated by reference herein are the press release and interview with Dr. Gerald R. Cysewski, Chairman, President and Chief Executive Officer of Cyanotech Corporation as published by the Wall Street Transcript.  Such press release and interview contain certain forward-looking statements. 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or hereafter filed under the Securities Act of 1933,  as amended,  except to the extent that such information is superceded by information as of a subsequent date that is included in or incorporated by reference into such registration statement.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.

On December 6, 2004 The Wall Street Transcript issued a press release announcing that it had published an interview with Dr. Gerald R. Cysewski, Chairman, President and CEO of Cyanotech Corporation in which he talks at length about the Company.  A copy of this press release is attached as Exhibit 99.1.

ITEM 9.01. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

(c) Exhibits.

99.1 Press release dated December 6, 2004 announcing the publication of an interview by the Wall Street Transcript with Dr. Gerald R. Cysewski.

99.2 Complete text of the interview conducted by the Wall Street Transcript with Dr. Gerald R. Cysewski.

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Signatures

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.

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EXHIBIT INDEX

99.1 Press release dated December 6, 2004 announcing the publication of an interview by the Wall Street Transcript with Dr. Gerald R. Cysewski.

99.2 Complete text of the interview conducted by the Wall Street Transcript with Dr. Gerald R. Cysewski.

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