“In pursuit of this scheme, Schubarth violated international law and the Lacey Act, both of which protect the viability and health of native populations of animals. ...

The Lacey Act prohibits interstate trade in wildlife that has been taken, possessed, transported or sold in violation of federal or state law. The Lacey Act also prohibits the interstate sale of wildlife that has been falsely labeled. The Act is one of the most powerful tools the United States has to combat wildlife trafficking and prevent ecological invasion by injurious wildlife."

Laws aside, I think the largest potential harm is introducing a potentially invasive species that could harm local ecosystem.