👉 Casarás, also known as the black cod or the black fish, is a type of fish that has been found in several different parts of the world. It is generally considered to be an invasive species and can cause problems for native ecosystems due to its ability to displace native fish populations. The term "cascaras" refers to the white fish, which are also known as cod or carp, which are a type of fish that has been found in many parts of the world. However