Tuesday, Texas Department of State Health Services advised people not to eat fish caught in the Houston Ship Channel.
On Friday evening, officials added fish or crab caught in the San Jacinto River, north of SH-146/Fred Hartman Bridge to their advisory.
After being closed for five days, the ship channel reopened partially Wednesday to allow some daytime operations.
The U.S. Coast Guard has been skimming the water to pull out oily product.
Health officials normally warn children and women of childbearing age to not eat fish or crab from this area, but the new warning applies to everyone.