Ecosystems

Most snakehead fish will avoid contact with humans. In captivity, many will actually act shy around people. However, when guarding their eggs or young, they can become aggressive if approached. One species, the giant snakehead ( Channa micropeltes ) native to southeastern Asia, has been reported to be aggressive toward humans who got too close to their nest. Other snakeheads are not as aggressive...

In some places, yes, snakehead fish can still be kept as pets, but under several constraints. Specifically, importation and interstate transport of live snakeheads is prohibited. Many states prohibit possession of snakeheads, and several of those states have done so for decades. Aquarists can obtain information about regulations concerning possession of live snakeheads and other prohibited fishes...

Chinese tallow has been cultivated in nurseries and sold as an ornamental tree used for landscaping; however, it is now classified as a nuisance species in some locations and can no longer be sold. It has separate pollen and seed-bearing flowers, and seeds can be spread by birds and by moving water. Chinese tallow has spread from South Carolina all the way down to Florida, west into Texas, and has...

Tamarisk is an invasive shrub or small tree that is found across the American West. Also known as saltcedar, tamarisk favors sites that are inhospitable to native streamside plants because of high salinity, low water availability, and altered streamflow regimes created by dams. Researchers debate the extent of tamarisk’s negative impacts, but this invasive species can and does alter habitat...

Tallow has been cultivated as a seed-oil crop in China for at least 14 centuries. Candles, soap, cloth dressing, and fuel are made from the tallow. Chinese vegetable tallow is a solid fat that is in the outer covering of the Chinese tallow seeds. The kernels produce an oil called stillingia oil that is used in machine oils, as a crude lamp oil, and in making varnishes and paints. It can also be...

The invasive Chinese tallow tree has the ability to reach reproductive age in as little as 3 years and to remain productive for at least 60 years. It does not seem to have a preference for disturbed areas over undisturbed areas and can grow in a variety of places. It can also grow in both full sunlight and shade. It is more tolerant of salinity and flooding than quite a few other native species...

The Burmese python is now distributed across more than a thousand square miles of southern Florida from coast to coast. This includes Everglades National Park, Biscayne National Park, Crocodile Lake National Wildlife Refuge, Francis S. Taylor Wildlife Management Area, Big Cypress National Preserve, Fakahatchee Strand Preserve State Park, Florida Panther National Wildlife Refuge, Picayune Strand...

It is incredibly difficult to estimate the true population numbers of Burmese pythons in South Florida. Burmese pythons can survive in and utilize a variety of habitats found in the region, and many of these areas are difficult to access and effectively survey. Conservatively, tens of thousands of invasive Burmese pythons are estimated to be present in the Greater Everglades region. Learn More...

If you see a python in the wild – or suspect that a snake is a python or an invasive snake – you should take the same precautions for these constrictor snakes as one would take for any wildlife: avoid interacting with or getting close to them. If you are in Everglades National Park, you can report a python sighting to a park ranger. You can also report the animal via the “Ive Got 1” reporting...

Non-native Burmese pythons have established a breeding population in South Florida and are one of the most concerning invasive species in the area. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe declines in mammal populations throughout Everglades National Park have been linked to Burmese pythons, with the most severe declines in native...

Human fatalities from non-venomous snakes are very rare, probably averaging one or two per year worldwide. All known constrictor-snake fatalities in the United States are from captive snakes; these are split between deaths of snake owners who were purposefully interacting with their pet and deaths of small children or infants in homes where a snake was kept captive as a pet. There have been no...

The odds of eradicating an introduced population of reptiles once it has spread across a large area is very low – pointing to the importance of prevention, early detection, and rapid response. With the Burmese python now distributed across more than a thousand square miles of southern Florida, including all of Everglades National Park and across the southern coast to Rookery Bay National Estuarine...