Koi Fish: Are They Saltwater Species? Habitat, Care, and Interesting Facts
Koi are freshwater fish, not saltwater fish. They thrive in temperatures of 64–75°F. Koi can tolerate brackish water but not full seawater salinity. They are commonly found in ornamental ponds. While Koi need minimal salt, too much salt can irritate them and cause excess mucus production. Care for koi fish includes maintaining clean water, ensuring … Read more