Form 8-K

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

Date of Report (Date of earliest event reported): May 28, 2009

RIO VISTA ENERGY PARTNERS L.P.
(Exact name of registrant as specified in its charter)

Delaware 000-50394 20-0153267

(State or other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

1313 Alton Gloor Blvd., Suite J
Brownsville, Texas
98526

(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (956) 831-0886

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:

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 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

On May 28, 2009, Rio Vista Energy Partners L.P. (“Rio Vista”) received a letter from the Nasdaq Stock Market (“Nasdaq”) staff indicating that since Rio Vista’s Report on Form 10-Q for the period ended March 31, 2009 was not reviewed by Rio Vista’s independent auditor, Rio Vista was not in compliance with Nasdaq Listing Rule 5250(c)(1) for continued listing on The Nasdaq Capital Market. Nasdaq has provided Rio Vista until July 27, 2009 to submit its plan to regain compliance (the “Plan”) and if the Plan is accepted by Nasdaq, Nasdaq may grant Rio Vista an additional extension of up to 180 calendar days from the original filing due date, or November 11, 2009, to regain compliance. Rio Vista plans to remedy the delinquency by having a review of the March 31, 2009 quarterly report by its independent auditor and amending the originally filed Form 10-Q for the period ended March 31, 2009 to include such report.

Item 9.01 Financial Statements and Exhibits.

Exhibit 99.1 Rio Vista’s press release of June 2, 2009 announcing that its receipt of the Nasdaq notification letter regarding Rio Vista’s non-compliance with Nasdaq Marketplace rule 5250(c)(1).

SIGNATURES

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

Rio Vista Energy Partners L.P.

By: /s/ Ian T. Bothwell
Name: Ian T. Bothwell
Title: Acting Chief Executive Officer,
Acting President, Vice President,
Chief Financial Officer, Treasurer and
Assistant Secretary (Principal Executive,
Financial and Accounting Officer)

Dated: June 2, 2009

EXHIBIT INDEX



Exhibit No.		Description

99.1		Press release dated June 2, 2009.


Delaware	000-50394	20-0153267
(State or other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)


1313 Alton Gloor Blvd., Suite J Brownsville, Texas		98526
(Address of Principal Executive Offices)		(Zip Code)