Electronic tags introduced into the belly of caught fish have shown that grass carp move farther around Lake Erie than researchers thought. Triploid grass carp is a possible management strategy for aquatic plants in your pond If breeding populations are established, the report predicts that it will take several decades for grass carp to show significant effects on the ecosystem. 1. It is unlawful to transport, import, possess or import triploid grass carp into this Commonwealth unless the person who possesses, transports, imports or imports the grass carp receives and retains the necessary authorizations. Authorisations shall be issued on request to an official empowered to enforce the Code or this Part. The maximum number of grass carp that you are allowed to store under normal conditions is 15 per hectare. Pond owners who wish to store triploid grass carp in ponds of 5 acres or less must complete and submit an application for a stocking permit for the triploid carp pond owner and pay a permit fee to the PA Fish and Boat Commission. Ponds larger than 5 hectares and in cases where there is an increased risk of negative environmental impacts require additional reports, details of which can be found on the permit application. Grass carp primarily pose a risk to waterfowl habitats and wetlands. They are known to reach weights of 40 to 60 pounds or more. A sterilized female Asian carp captured in Lorain Harbor, Ohio, in Lake Erie Harbor, August 13, 2016. For plants submerged at the bottom of the pond, instead of using harsh chemicals to control them, we sell grass carp as an option.
These grass carp are sterile (they will not reproduce), which is required by law in Pennsylvania and New York. However, to buy them from us, you must first obtain a licence from the Fish Commission. It is not difficult to get this permit, you have to fill out a short application and send it to the Fish Commission. On the links page, you will find links to PDF files of PA and NY applications. Grass carp was first imported into the United States from Taiwan and Malaysia in 1963 for use as a control of non-toxic weeds in freshwater ponds. The fish escaped and spread across the Midwest through the Mississippi River Basin. The exact number of grass carp in the Great Lakes is just a guess, but according to the U.S. Geological Survey`s database of non-native aquatic species, 30 fertile fish were caught in Lake Erie or its tributaries in 2016.
Fourteen were captured in 2015, 25 in 2014 and only two in 2013. If you`re having trouble controlling aquatic plants in your pond, you might consider introducing grass carp into your pond. These fish, native to Asia, have been imported into the United States since the 1960s to intentionally release them into our waters to control aquatic plants. In 1994, Pennsylvania legalized the importation of grass carp as long as it is the triploid variety. This means that they have been bred to have an additional set of chromosomes and are therefore sterile. Triploid grass carp are unable to reproduce and become uncontrollable. According to the risk assessment, the impact on the Great Lakes ecosystem would depend on population density. The report notes that active control techniques in lakes where grass carp are found “would reduce the likelihood of establishment and delay or reduce subsequent ecological consequences.” Grass carp depend almost exclusively on aquatic plants for food. According to the PA Fish and Boat Commission, they prefer to eat the following aquatic plants: e) Restrictions on the introduction of triploid grass carp. 4. The Commission may require the applicant for an authorisation to store triploid grass carp in a pond or body of water covering an area of 5 hectares or less to submit an environmental inspection report in the format described in paragraph 3 if the examination of the application by staff shows that further inspection or verification of the proposed stand is appropriate in the circumstances.
Newcomb and the DFO report point to a patchwork of regulations to help fish reach nature. In Michigan, it is illegal to possess or store grass carp, but sterilized fish are allowed in Ohio, Indiana, Pennsylvania and New York. This is the conclusion of a Fisheries and Oceans Canada (DFO) report on grass carp, 48 of which were found in open waters or tributaries of the Great Lakes last year. Problematic fish have “arrived” in Lake Michigan and Lake Erie and are “very likely” to establish themselves within 10 years, according to the peer-reviewed study, which reveals an unfortunate reality in candid terms. Grass carp most likely reached Lake Michigan through the Chicago-area waterway system, while humans likely released grass carp into Lake Erie and Lake Ontario. The report cites a 2014 study that suggests some herbivorous carp found in Lake Erie and Lake Michigan may be of aquaculture origin. Asian grass carp have invaded the Great Lakes and now is the time to act. Grass carp have been reported regularly over the past 30 years, Newcomb said, but have appeared more frequently in recent years. Grass carp can only be purchased from authorized triploid carp dealers listed on the Pa Fish and Boat Commission website. According to state law, containment devices must be installed so that fish cannot escape from the pond – please call us to discuss simple methods to achieve this. Caution should be exercised with these fish, as they are feeding machines.
Overcrowding a pond with them could mean that they can completely rid the pond of any plant life. It is possible that a 6-inch grass carp at (2) It is illegal to transport, import, possess or import grass carp into this Commonwealth unless the person who owns, transports, imports or imports the grass carp has a valid certificate of purchase or origin from a producer participating in the USFWS certification program for triploid grass carp.