The large bulging eyes of the goldfish in the description may refer to the lion-headed goldfish. Lionhead goldfish are one of the species of goldfish and are famous for their bulging, rounded sarcomas on their heads. These sarcomas make their heads look wider and rounder, and therefore they have big eyes.
The lionhead goldfish was selectively bred to give its head and body a balanced appearance, with the sarcoma on its head being its unique feature. The lion-headed goldfish has a bulging body, and the "lion's mane" on the head and the development of bony pedicles are also characteristics of this species.
Overall, lionhead goldfish are one of the more distinctive goldfish species, and they are often loved for their round knobs and large eyes.
