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Freshwater fishLucky Black Koi
Lucky Black Koi
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Black koi may be hard to spot in an outdoor pond but they, at least according to Japanese culture, bring luck to the pond owner. Black koi are solid black and, when large, are like scary sea monsters rising from the deep. True solid black koi are hard to come by and when we do get them, they are about four inches in size. One black koi is a must for every pond.
Quick Facts
| Scientific Name | Cyprinus carpio |
| Origin | Captive-bred (Asia) |
| Care Level | Easy |
| Temperament | Peaceful |
| Adult Size | Up to 2–3 feet |
| Lifespan | 25–35 years |
| Diet | Omnivore |
| Water Temperature | 50–80°F |
| pH | 7.0–8.5 |
| Group Size | Does best in a group |
| Shipping Size | Approx. 4" |
Care Guide
Tank setup: Koi grow large and are best kept in an outdoor pond with strong filtration. They are cool-water fish and do not need a heater.
Feeding: Feed a quality koi or goldfish pellet once or twice a day, only as much as they eat in a few minutes. Feed less when the water is cool.
Tankmates: Koi get along with goldfish and other pond fish.
Good to know: Black koi (karasu) are said to bring good luck to the pond owner.
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