Do perch and chimps share a common ancestor?

The correct answer is YES.

Perch and chimps they share a common ancestor.

A common ancestor is species that multiple species do share a species. Many years ago, ancestors began to diverge. This diverging led to different lineages and later raised to different species.

For example, human and apes evolved from a common ancestor. Humans and yeast they share the same common ancestor in that human have genes that codes for myosin, and also a gene in yeast which too codes for myosin protein.