What kind of snake is a lime-green snake in south Texas?

Answer 1

It is a Northern Rough Greensnake. So called because of the keel like ridges on its scales which gives it a "rough" feel unlike normal smooth scaled snakes. These lime green snakes are often found in dense, low lying vegetation near a permanent water source. They rely on their color for camouflage and will usually attempt to escape if threatened. They rarely bite instead relying on the release of feces, musk, and urine to throw off predators. Their primary diet is soft bodied arthropods, including crickets, Spiders, moths, butterflies, and grasshoppers. Green snakes are oviparous.

Answer 2

Rough Green snake. Its the only green snake in Texas that I know of.