A tiny, invasive crustacean that can hatch, grow and reproduce in as little as two weeks, and potentially wreak havoc on fish populations and other native aquatic wildlife, has been found in a lake in the Adirondacks, the state Department of Environmental Conservation said this morning. We’re talking about the spiny water flea and it’s been confirmed in the Great Sacandaga Lake.

“Native to Eurasia, spiny water fleas are crustaceans that can have a huge impact on aquatic life in lakes and ponds due to their rapid reproduction rates. In warmer water temperatures, these water fleas can hatch, grow to maturity, and lay eggs in as few as two weeks. But that is not the only challenge presented by this invasive species. Sometimes, its eggs can remain in a dormant state for years before hatching, making tracking it and limiting its spread very difficult.

The spiny water flea feeds on tiny crustaceans and other zooplankton – putting them in direct competition with fish and other native aquatic organisms for this important food source. In addition, the tail spines of the spiny water flea hook on fishing lines and foul fishing gear.”

The photographs are courtesy of the DEC. The second one shows how the spiny water fleas can hook onto fishing line and be transported to another body of water. The DEC recommends the following precautions:

“INSPECT & CLEAN your fishing and, boating equipment and, remove all mud, plants and, other organisms that might be clinging to them.

DRY your fishing and boating equipment before using it on another body of water. Drying is the most effective “disinfection” mechanism and is least likely to damage sensitive equipment and clothing. All fishing and boating equipment, clothing and other gear should be dried completely before moving to another body of water. This may take a week or more depending upon the type of equipment, where it is stored and weather conditions. A basic rule of thumb is to allow at least 48 hours for drying most non-porous fishing and boating gear at relative humidity levels of 70 percent or less.

DISINFECT your fishing and boating equipment if it cannot be dried before its use in another body of water. Disinfection recommendations vary depending on the type of equipment and disease or of concern. Be particularly aware of bilge areas, livewells and baitwells in boats. These areas are difficult to dry and can harbor invasive species.”