Omega Protein (OME) and CVR Energy (CVI)

You've probably heard that fish oil is good for you. While not exactly the most attractive thing to think about, it can apparently help to treat a variety of maladies from heart issues to mental problems to aging.

But on Wednesday, it would also have been pretty good for your portfolio. Omega Protein Corporation (OME - Snapshot Report), the country's leading producer of fish oil and specialty fish meal products, was one of the top-performing Zacks #1 Rank companies with a gain of 3.86%.

Volume surpassed 300,000 shares on the day, compared to the daily average of practically 160,000.

OME is expected to earn $1.22 per share this year, according to the Zacks Consensus Estimate. The two analysts covering this company have been sitting still for the past 30 days, but the guidance is up 6% from 2 months ago.

As for 2012, the Zacks Consensus Estimate of $1.33 suggests year-over-year growth of 9%. This outlook has raised 6.4% in 2 months.

First-quarter earnings per share for OME actually missed the Zacks Consensus Estimate, but marked a solid improvement on a year-over-year basis. Plus, revenues soared 75% to $56.4 million.

Omega Protein Corporation is a nutrition and wellness company dedicated to delivering healthy products to the animal, human and plant nutrition industries.

It is part of the food – miscellaneous/diversified industry. There are two other names from this space on today's Zacks #1 Rank List: BRF – Brasil Foods S.A. (BRFS - Snapshot Report) and Corn Products International, Inc. (CPO - Snapshot Report).

"Energy" was something that the market sure did run out of on Wednesday, especially as the Fed announced that it will continue to sit on the sidelines.

Nevertheless, an energy stock was on of the top-performing Zacks #1 Rank companies today. Shares of CVR Energy, Inc. (CVI - Snapshot Report) gained approximately 3.6%, as volume soared past 4.7 million from the daily average of around 2.5 million.

The spark probably stems from higher oil prices, due to demand for crude improving more than was anticipated.

CVR Energy is a refiner and marketer of petroleum fuels and a majority owner of a nitrogen fertilizer products manufacturer. It is one of only two companies from the oil refining and marketing industry on today's Zacks #1 Rank List. The other name from the space is Delek US Holdings, Inc. (DK - Snapshot Report).

The Zacks Consensus Estimate for this year is currently $2.77 per share, which is up 14% in the past 30 days. That guidance has also improved by 34% over the past 3 months. As for 2012, the Zacks Consensus Estimate of $2.48 per share has actually moved lower in the past 7 days, but remains above levels from a month and 90 days ago.

By the way, THE top-performing Zacks #1 Rank company on Wednesday was TravelCenters of America LLC (TA - Snapshot Report), which gained 5.7%.

TA's travel centers operate under the "TravelCenters of America", "TA" and "Petro" brand names and offer diesel and gasoline fueling services, restaurants, truck repair facilities, stores and other services. Its nationwide business includes travel centers located in 41 U.S. states and in Canada.

Read the full analyst report on BRFS

Read the full analyst report on CPO

Read the full analyst report on DK

Read the full analyst report on TA

Read the full analyst report on OME

Read the full analyst report on CVI