There are many types of fish, but not all are suitable for ornamental ponds. Outdoor ponds may suffer fluctuating temperatures because of seasonal climate changes. There may even be an increased risk of predators. However, some species are perfect for outdoor ponds because of their large sizes and beautiful appearances. Others even perform useful tasks like eating algae. Let’s look at some great outdoor ornamental pond fish now.
1. Koi Fish: Hardy With Unique Markings
Koi are one of the most recognizable outdoor ornamental fish. Japanese breeders created this domesticated species from wild carp. They don’t exist in the wild and are perfect for ponds because of their large size. There are many varieties of Koi with distinctive markings, including the Showa, Koshaku, and Taisho Sanke. Koi fish are very hardy and can survive in cold water even in unindeal conditions. Their ideal temperature is 64 to 75°F with a pH of 7.0 to 8.6.
Ideally, there should be a minimum of 250 gallons of water per single adult Koi fish. These beautiful creatures grow up to three feet long, depending on the variety. Meanwhile, they may outlive their owners with the right care because they have life spans of up to 50 years. It’s no wonder Koi fish are so popular because they have stunning appearances. From Platinum Koi to the scaleless Doitsu, they’re exceptional.
2. Goldfish Suit Outdoor Ponds in Colder Climates
The humble goldfish may not be everybody’s immediate idea of an outdoor pond fish. However, this low-maintenance species will survive in a variety of climates. There’s a stigma around goldfish that it’s impossible to keep them alive. The reality is that most people don’t care for them properly because they stick them in a tiny bowl. An ornamental pond can be an ideal place for them to thrive.
Goldfish may also surprise owners by growing up to 12 inches long when they have enough space. Indoor tanks can stunt the growth of some fish. It’s very easy to find pellets for them to eat in marine shops. Also, they can handle colder temperatures so they’re a good option for keepers who live in colder climates. Furthermore, they’re available in more colors than the classic bright orange.
3. Shubunkin: Not Actively Aggressive
The Shubunkin is a type of long-bodied goldfish that also originates in Japan. It’s another example of an excellent outdoor ornamental pond fish. Again, they can handle a wide temperature range from 33 to 85°F. They can adapt to seasonal climate changes without any fuss. Many pond fish keepers want their pets to have bright, vivid appearances. A few Shubunkin would make a colorful addition to any pond because of their multi-patterned bodies.
Typically, Shubunkin live for about 15 years, but they can reach the grand age of 30 with the right care. You can feed them regular goldfish pellets, but ensure they mostly consume protein. They are omnivores and may swallow smaller fish, so take care when selecting pond mates. However, they are not actively aggressive, so they make good additions to multi-species ponds. One potential issue is that they produce lots of waste, so be sure to get a strong filter!
4. Common Plecostomus Can Keep Ornamental Ponds Clean
Plecos make amazing additions to freshwater ornamental ponds. Firstly, their unique appearance adds an interesting aesthetic for guests to enjoy. They have the same whisker-like filaments as most catfish species. Meanwhile, white spots fleck their body in unusual patterns. Another key benefit is that plecos are bottom dwellers, so they will help keep your pond free from algae and waste. Their calm temperaments mean they won’t eat smaller tankmates, either.
These low-maintenance fish can grow up to 20 inches long. A well-maintained pond is the perfect environment for them to reach their full potential because most indoor tanks are too small. The only negative is that they prefer warmer water and won’t be suitable for every location. We recommend between 72°F and 82°F because they hail from South America, where the waters are warmer than other regions.
5. Mosquito Fish Eat Invasive Mosquito Larvae
Many people in North America keep this unique species because they want to control the mosquito population in their gardens. These fry love eating mosquito larvae, which help reduce the number that hatch. These fish are great because they are hardy and can live in water temperatures from 33-104°F but prefer somewhere in the middle. They are very self-sufficient fish and require very little maintenance.
Most experts recommend six to ten mosquito fish per pond depending on the size. They will live for about 15 years with the correct care. However, they are smaller than the other fish in this guide as they only grow to about 1.5 inches. They are more vulnerable to predators like gulls and cranes so be wary. Use netting or decoys to protect your new fish and they will thrive.
6. Tamasaba Boast a Striking Appearance
The Tamasaba is another member of the goldfish family but far less common. This ornamental species originally hails from the frigid city of Niigata in Northern Japan. These tall fish have dramatic appearances because of their long fins and brightly colored bodies. Their keepers love them because they’re relatively unusual compared to Koi or goldfish. They also thrive in the cooler conditions in Canada, the U.S., and the UK.
These fish are also more expensive than some of the others on this list, so care for them properly. Maintain the correct water quality and regularly check parameters. We advise feeding them a combination of fancy pellets, live protein like bloodworms, and vegetables. Don’t overfeed them because they are susceptible to swim bladder disease, like other goldfish.
