Unwanted passengers have been found in certain aquarium décor, and conservation officials are on high alert.
The dreaded zebra mussels have been found in a type of algae known as moss balls. Marimo is a “filamentous algae,” according to Missouri Department of Conservation. It grows into velvety balls of moss. Wild marimo are found mainly in Europe and Asia, especially in Japan.
“In recent years, their aesthetic appeal has made these plant-like organisms popular in the aquarium trade,” MDC stated.
The mollusks are an invasive species that can harm habitats in reservoirs and streams.