GrassCarp - Possible Trial of Grass Carp in Lake Hopatcong, Triploid Grass Eating Carp

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  • 1. Possible Trial of Grass Carp in Lake Hopatcong
  • 2.Triploid Grass Eating Carp A Sterile Form of Grass Carp Non-Native to US Timid Fish – Avoids Contact Bred in Arkansas Vegetarian – Like Leafy Weeds Eat Plants From Top Down Tend to Stay at Food Source Live Up to 10 Years – Predicted 10% Mortality Per Year Reach Weights of 25+ Pounds & 36” In Length Dormant in Winter & Resume Feeding in Spring
  • 3. Most States Allow Use With Permits Widely Used in New York State Stocked 3 Years Ago at Candlewood Lake, CT Similar to Lake Hopatcong in Many Aspects Many Coves Feeds a River Heavy Recreational Use – Boating, Fishing & Swimming Weed Problems Lakefront Homes – 1,600 (2,200 at Lake Hopatcong) Multiple Municipalities Share Lakeshore Status
  • 4.Candlewood Lake, CT Had Been Stocked In Neighboring Ball Pond for 19 Years With Success Candlewood Held Informational Sessions to Obtain Community & Angler Support Obtained CT DEEP Approval DEEP Determines Number of Carp to Stock Based on Aquatic Plant Survey Candlewood Stocked 3,850 in ‘15 & 4,450 in ‘17 Use a 15 Per Vegetative Acre Model Cost $5.75 Per Fish Not Intended As a Sole Remedy – Another Tool Program Considered to Be Working – Milfoil Being Eaten
  • 5.Way Forward Looking At Alternative Weed Approaches Lake Currently Relies on Weed Harvesting & Herbicides Hydroraking Trial in 2017 Grass Eating Carp Has Promise & Is Worthy of Further Investigation Could Be Very Effective in Certain Area of Lake Hopatcong Long-Term Benefits When Compared to Herbicide Treatment Carp Have Little Contact With Humans or Other Fish Diligent Monitoring Program Would Be A Part of Any Trial NJ Currently Restricts Stocking in Waters > 10 Acres Work With DEP/Fish & Wildlife To Approve A Trial In Lake Hopatcong