What is a perchs domain kingdom phylum and class?

It seems like you're asking about the classification of a creature called "perchs." However, there's no known animal or plant with that name.

Did you perhaps mean "perch"? If so, I can help you with its classification:

* Domain: Eukarya (organisms with cells containing a nucleus)

* Kingdom: Animalia (multicellular organisms that are heterotrophic, meaning they obtain nutrients by consuming other organisms)

* Phylum: Chordata (animals with a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some point in their development)

* Class: Actinopterygii (ray-finned fishes)

Let me know if you had a different creature in mind, and I'll do my best to help you understand its classification!