"They are perfect breeding and eating machines."

A ban on the importation of all lionfish will go into effect Friday in Florida.

The spiny, striped fish is popular in aquariums but is considered an invasive species and has had a negative impact on the ecosystem, according to the Florida Fish and Wildlife Conservation Commission, the organization behind the ban.

So what exactly are lionfish and is this an issue elsewhere? USA TODAY Network answers some key questions about this colorful fish.