The grass carp is a fish of large, turbid rivers and is very common in UK fisheries, with a wide degree of temperature tolerance. Our UK-bred Grass Carp are perfect for outdoor ponds and will help to keep problem weeds, such as blanketweed and string algae, under control. They should not be considered as a complete solution for weeds however, more of a heavy grazer.
Please be aware that the image is for illustration purposes only. We are unable to guarantee the exact size, colour, sex or age of the assorted grass carp you are purchasing.
Why are they called Grass Carp?
Grass carp have been introduced into fisheries worldwide in places like New Zealand and Holland, to control the growth of aquatic plants. They are extremely prolific at eating weeds, grass and greenery, hence the name.
Are Grass Carp bad for ponds?
On the whole, grass carp are a rewarding species to keep in your outdoor garden pond, although they can become a little troublesome because they can grow very large and will feed on all types of vegetation. This can often include ornamental pond plants, which can be a little limiting for pond keepers once established. Grass carp do help to control problem weeds, which is positive if you are looking to maintain clear water.
Approx. supplied size: 5-7cm / 2-3"
Maximum size: can grow up to 200cm in lakes
Ideal number kept together: 1+
Our conditions: pH 7.5, temp 12 °C
Water flow: low to fast
Ideal temperature: 2–30 °C
Ease of Care
Easy to moderate. Will tolerate varied water conditions. Grass carp will grow quite large, so you must ensure that your pond has enough space and decent depth to accomodate.
Grass carp will happily live with other carp and coldwater species, but avoid smaller goldfish or minnows who may potentially be swallowed-up (often by accident) by larger specimens.
Grass carp will graze mainly on vegetation and insects in the pond, but will also take a mixture of algae pellet, wafer, fish flake and general pellets. To achieve growth, feed a high-protein pond pellet. When it gets colder you can feed them Wheatgerm, however, do not feed them below 10°C.
Egg layers, readily farmed in captivity. Grass carp enter reproductive condition and spawn at temperatures of 20 to 30 °C (68 to 86 °F). In the wild, grass carp spawn in fast-moving rivers, and their eggs, which are slightly heavier than water, develop while drifting downstream, kept in suspension by turbulence. The eggs are thought to die if they sink to the bottom.
Grass carp can live 5-10 years in perfect conditions.
For more information on general fishkeeping and our shipping procedures click here.
Pre-orders are shipped once we have the stock available and will be shipped using the service chosen at checkout.
All services are working day services and do not include delivery on Saturdays and Sundays or public holidays as standard. Deliveries are usually Monday to Friday only, although some Royal Mail items may be delivered on weekends as standard if the service is available in your area.
|Royal Mail (2-3 days)||£0.00-£49.99||£2.99|
|Royal Mail Next Day (1-2 days)||£0.00-£49.99||£4.99|
|Parcelforce 24 (1 day)||£0.00-£49.99||£7.99|
|Parcelforce 24 (1 day)||£50 and up||FREE|
|Pallets (booked in)||aquariums / bulky items|
Pallets Standard (3-5 days)
Pallets Express (1-2 days)
|*EXCLUDED ITEMS||extra delivery fees apply:|
|Fibreglass Ponds (booked in)|
Zone 1 (7-10 days)
|Zone 2 (7-14 days)||-||£149.99|
|Zone 3 (7-21 days)||-||£249.99|
|Pond Plants (direct from grower)
|All pond plants (3-10 days)||one-off fee regardless of order size/value||£5.99|
Please see our full delivery information page and terms and conditions for detailed information on shipping policies and zones