Can 4 parrot fish live with 2 goldfish kois and a sucker?

It is generally not advisable to keep parrotfish with goldfish and koi in the same aquarium, as their environment and care requirements can vary greatly.

Parrotfish are tropical saltwater fish that require a relatively high temperature, a specific pH level, and a salt concentration similar to that of the ocean. They also need a diet of algae and other marine organisms, as well as plenty of swimming space and places to hide.

Goldfish and koi, on the other hand, are freshwater fish that are more adaptable to a wider range of temperatures and water conditions. They are also omnivores and can eat a variety of plant matter, small insects, and pellets.

In addition to the different environmental requirements, parrotfish are known for being aggressive and territorial, and they may attack other fish that are kept with them. Goldfish and koi, while generally peaceful fish, can also become aggressive if they feel threatened or overcrowded.

The combination of different environmental requirements and potential aggression makes it challenging to keep parrotfish, goldfish, and koi successfully in the same aquarium. It is generally recommended to keep these species separately to ensure their health and well-being.