Telescopic goldfish fish or Black moor Swimming in a fish tank - Bildbanksfoto

Pez telescopio (Carassius Auratus). The "telescope fish" or "black moor" has large balloon-shaped bulging eyes, which protrude from the head in a telescopic form and make them have poor vision, its velvety black color gives it a Very unique appearance. The body is short and rounded, has a double anal fin and another caudal called "Butterfly", is double and has two large lobes on each side, typical of the variety Telescopico.