What eats rainbow fish?

It's impossible to say definitively what eats rainbow fish without knowing the specific species you're referring to! There are over 300 different species of rainbow fish, and their predators will vary depending on their size, habitat, and location.

However, here are some general predators of rainbow fish:

* Larger fish: Larger fish species in the same habitat, like barramundi, catfish, bass, and larger cichlids.

* Birds: Water birds like herons, kingfishers, and egrets can snatch rainbow fish from the water's surface.

* Reptiles: Crocodiles, alligators, and some snakes can prey on rainbow fish.

* Other aquatic animals: Crustaceans, turtles, and even some insects can be predators of smaller rainbow fish.

To give you a more specific answer, you'll need to tell me what kind of rainbow fish you're interested in!