Bubble Eye cold water fish.

They grow up to 8-10 cm / 3 to 4 inches fully grown. They live in water parameters of PH range 6.5-7.5, and temperatures of 18-23 Celsius / 65-74 °F.

The bubble eye are a peaceful cold water fish. They are a small variety of fancy goldfish with upward pointing eyes, that are accompanied by two large fluid filled sacks. They are a dorsal less fish.
The bubbles are fragile and can be punctured easily, so you do have to be very careful with them. They are best mixed on there own or with none aggressive slow moving cold water fish. The bubble eye is not a strong swimming fish mainly due to there bubble eyes.

They will eat flake, mini granular, and pellet foods. Also a mix of freeze dried, frozen, or live foods is always a good treat for them. On a bubble eye gold fish you will notice there eyes are pointing up as there bubbles are underneath there eyes, so feeding floating food may be best. They can still foridge in the gravel for food but if they catch the bubble of a sharp piece of gravel this can pop the bubble.