While there are orange individuals in the Hudson, these tend to be easy pickings for predators; one study of the diet of ospreys along the Hudson found that goldfish were a common prey of this fish-eating hawk. Thus the goldfish we catch are more likely to be olive green or brown than orange or gold.

Yes, there are goldfish (Carassius auratus) in the Hudson River, but they rarely look like the bright orange pets found in home aquariums. When domestic goldfish are released into the wild, they often revert to their "wild type" coloration—a dull olive-green, bronze, or brownish-grey—within a few generations to better camouflage themselves from predators like ospreys and striped bass. In 2026, they are considered an invasive species in the Hudson, having been introduced decades ago through the intentional or accidental release of pets. They thrive in the river's slower-moving, freshwater sections and can grow surprisingly large, sometimes reaching up to 18 inches in length. Environmental groups like Clearwater note that while they are present, they are often outcompeted by native species like the golden shiner. Their presence is a reminder of the ecological impact of "aquarium dumping," as these hardy fish can survive in various water qualities and potentially disrupt the local food web by consuming large amounts of aquatic vegetation and small invertebrates.