How to Choose Between Goldfish and KOI


Many people have asked us over the years "Should I add goldfish or KOI (or both) to my pond? The answer is "it depends."

Goldfish are better suited to smaller water gardens and ponds, in the 50 - 500 gallon range. Goldfish are extremely hardy and easy to care for, which makes them the perfect choice for the new pond owner or water gardener.

KOI Feeding

KOI, on the other hand, require a little more knowledge and better water quality in most cases, than goldfish and are better suited to the more experienced pond keeper. KOI generally thrive best in ponds over 500 gallons (the bigger - the better.)

This is becuase KOI can grow quite large and therefore require more water in the pond for proper biological breakdown of waste. KOI are also more expensive (and harder to replace) than goldfish, so this should also be taken into account before filling your new pond full of KOI fish. More considerations...

Goldfish are an excellent choice for the average water garden that is usually also full of a variety of potted plants. Lilies, Lotus, Iris, and submerged annuals - these all do well in a water garden pond with goldfish. Goldfish will not disturb the plants, and will enjoy playing around under the lily pads without disturbing the plants.

Pond Goldfish

Japanese KOI on the other hand, and especially the larger ones, will often create a huge mess out of submerged potted plants. They seem to enjoy 'digging' in the soil of the plants and sometimes even knocking them over. This all leads to added mess in the pond, and can create a real problem for the pond owner.

Generally, it's best to not have submerged plants in large pots, when also keeping KOI. The ideal KOI pond is much deeper than the average water garden, so the necessity for plants to help with water quality and shade is reduced.

However, if you still do want to keep potted plants in your KOI pond, we recommend wrapping netting over the tops of the pots, to keep the fish from digging in the pots. Another thing you can do is to top the pots with 1" of pea gravel, and then larger river stones or similar over that. The KOI will not be able to get past the larger rocks.

As far as mixing Goldfish with KOI, this is fine and very common, we've just tried to highlight the most important differences between the two and between the average water garden and KOI pond. Feel free to experiment with both, and then decide which fish is more to your liking.

**************************************************
Brett Fogle is the owner of MacArthur Water Gardens and several
other pond-related websites including MacArthurWatergardens.com
and Pond-Filters-Online.com. He also publishes a free monthly
newsletter called PondStuff! with a reader circulation of over
9,000. To sign up for the free newsletter and receive our FREE
'New Pond Owners Guide' visit MacArthur Water Gardens today!
**************************************************







Related News



Reaping the rewards - Lake Oswego Review

Lake Oswego Review

Reaping the rewards
Lake Oswego Review, OR -5 hours ago
Dennis’ Seven Dees Landscaping and Garden Center in Lake Oswego is alive with color, and ideas. Assistant Manager Nicole Forbes encourages locals to enjoy ...

ROTARY ANNS’ OPEN GARDENS CULMINATING AT THE EXCEPTIONAL LE DOMAINE! - My Pressportal (press release)

ROTARY ANNS’ OPEN GARDENS CULMINATING AT THE EXCEPTIONAL LE DOMAINE!
My Pressportal (press release), South Africa -7 hours ago
The final garden for green fingered lovers is the restored landscaped haven of Le Domaine. With an emphasis on enhancing the natural environment, ...

August beautification award winners announced - Emporia Gazette

August beautification award winners announced
Emporia Gazette, KS -6 hours ago
The garden shed is used for many gardening projects. A snowball bush, a lavender chrysanthemum and perennial hibiscus planted around the shed bloom ...

Western Trade Days lengthens schedule - Denton Record Chronicle

Western Trade Days lengthens schedule
Denton Record Chronicle, TX -11 hours ago
... clothing, furniture, jewelry, gardening and landscaping products, kitchen items and food vendors. The location also features the Tioga Heritage Museum, ...

Price back in the saddle as agricultural extension agent - Palestine Herald Press

Price back in the saddle as agricultural extension agent
Palestine Herald Press, TX -Aug 16, 2008
If you love flowers, plants, landscaping, gardening this may be your organization. The Anderson County Master Gardeners will host a training class beginning ...

Garden diary: Gardeners, Get your tetanus shots - The Star-Ledger - NJ.com

Garden diary: Gardeners, Get your tetanus shots
The Star-Ledger - NJ.com, NJ -21 hours ago
The classic tetanus-inducing mishap is stepping on a rusty nail, but landscaping and yard work actually account for about a third of the cases reported in ...

Bay and beyond Clear your head. Gape at the view. Get some ... - San Francisco Chronicle

Bay and beyond Clear your head. Gape at the view. Get some ...
San Francisco Chronicle,  USA -10 hours ago
NB Displays of products and services for home improvement, remodeling, decorating, landscaping and gardening projects. Noon-8 pm Fri., 11 am-7 pm Sat., ...

A Sustainability That Aims to Seduce - New York Times

A Sustainability That Aims to Seduce
New York Times, United States -21 hours ago
... from strict conservationism — the Hillan-Robertson project is typical of an emerging movement in environmentally conscious landscape and garden design. ...

Leaving green: Saving water starts with innovative landscaping - Salt Lake Tribune

Leaving green: Saving water starts with innovative landscaping
Salt Lake Tribune, United States -1 hour ago
Then, once we've changed our mind-set, and a Tucson tableau is no longer taboo, we need to put on our gardening gloves and start pulling turf. ...

Homeowners mix vegetables and flowers to save money - Laconia Citizen

Homeowners mix vegetables and flowers to save money
Laconia Citizen, NH -19 hours ago
... lawn and garden company based in Marysville. One reason is because of edible landscaping, which is a growing trend according to the company's research. ...