Exotic Isopod Trade Threatens Vulnerable Species

Unregulated online market for rare and colorful isopods raises conservation concerns

Jan. 28, 2026 at 4:15am

Got story updates? Submit your updates here. ›

A robust, largely unregulated online trade in exotic isopods, also known as roly-polies or pill bugs, is raising concerns among scientists that it could pose a serious threat to some vulnerable species. Thousands of enthusiasts are collecting and breeding different varieties of these small invertebrates, with some rare species fetching high prices. Researchers warn that demand is leading to poaching from protected areas, and the introduction of invasive species, potentially causing extinctions.

Why it matters

Isopods play a key role in maintaining healthy soil, but many species have not been well studied by scientists. The lack of oversight and regulation in the pet trade makes it difficult to monitor the impact on vulnerable populations, raising fears that some rare species could be pushed to the brink of extinction.

The details

Collectors are targeting exotic species like the Cuban Spiky isopod, which is known to exist only in a small Cuban nature reserve and is illegal to import without a permit. Unscrupulous sellers are poaching these and other rare isopods from protected areas to meet the demand from enthusiasts. The trade is largely unregulated, with many online platforms allowing the sale of non-native species that could become invasive pests.

  • In October 2026, a paper was published in the journal Conservation Biology highlighting the threat posed by the isopod pet trade.
  • At a recent pet expo in White Plains, New York, Cuban Spiky isopods were being sold for $350 each.

The players

David Vargas

Runs a company called Holy-Poly Isopods in Wildomar, California that breeds isopods.

Pallieter De Smedt

An isopodologist at Ghent University and a co-author of the paper in Conservation Biology.

Nathan Jones

An isopod researcher and a co-author of the paper in Conservation Biology.

Sebastian Echeverri

Of the Xerces Society for Invertebrate Conservation, who was not involved with the paper in Conservation Biology.

Animal and Plant Health Inspection Service

The Agriculture Department office that prevents pests from entering the United States.

Got photos? Submit your photos here. ›

What they’re saying

“I always compare it to Pokémon. You've got to catch them all.”

— David Vargas

“A lot of the invertebrate pet trade is unfortunately expanding very quickly and doing so without any oversight or regulation. On every level where it could be a problem, it has become a problem.”

— Sebastian Echeverri, of the Xerces Society for Invertebrate Conservation

“In very small vials, you can transport them with some soil and you do not even see that there is an isopod inside.”

— Pallieter De Smedt, isopodologist at Ghent University

What’s next

The Animal and Plant Health Inspection Service says it takes violations of regulations on importing non-native isopods very seriously, but declined to provide examples of enforcement action.

The takeaway

The booming, unregulated trade in exotic isopods highlights the need for greater oversight and conservation efforts to protect vulnerable invertebrate species, many of which remain understudied and at risk of exploitation by poachers and unscrupulous sellers catering to a growing collector's market.