Your fish has red on tail and body?

Please provide more context! I need more information to understand what you're asking.

For example, tell me:

* What kind of fish are you talking about? (e.g., goldfish, betta, guppy)

* What color is the rest of the fish?

* Are you describing a specific fish you have or a general type of fish?

* What are you curious about? (e.g., is this normal, is there a health issue, what does it mean?)

Once I have more information, I can help you!