How do you know if a fish is coy fish?

Appearance:

* Color: Koi are known for their vibrant, colorful scales. They come in a wide variety of colors and patterns, including red, white, black, yellow, orange, and blue.

* Body Shape: Koi have a torpedo-shaped body, which is well-suited for swimming. They are usually quite large, with some varieties reaching lengths of over 3 feet.

* Scales: Koi have large, overlapping scales that give them a distinctive look.

* Fin Shape: Koi have long, flowing fins, especially their dorsal fin.

Behavior:

* Social: Koi are generally social fish and enjoy swimming in groups.

* Active: They are active swimmers and often enjoy exploring their surroundings.

* Curious: Koi are known for their curiosity and may approach people or objects with interest.

Habitat:

* Ponds and Lakes: Koi are commonly kept in outdoor ponds and lakes. They prefer warm water and sunny conditions.

If you're unsure, you can also:

* Ask the seller: If you are buying a koi, ask the seller to confirm that it is a genuine koi.

* Do some research: There are many resources available online and in books that can help you identify koi.

Important Note: While the above characteristics are helpful, it's important to remember that there can be some overlap between koi and other types of fish. If you are unsure, it's always best to seek professional advice from an aquarist or fish expert.