Marine tubenose goby

Marbled Goby ( Proterorhinus marmoratus )

The Marbled Goby ( Proterorhinus marmoratus ) is a species of the family of gobies ( Gobiidae ). It can reach a total length of 11.5 cm and is found in European fresh and brackish water. It is often confused with the bullhead, can be distinguished from that but at the pelvic fins; in Bullhead they are separated as with most fish in the marbled goby, they are similar to a suction cup fused together.

Features

The Marbled Goby has a stocky body, with a short and high head. The head is higher than it is wide, its length is 4, the total length of the 1/3fache. The snout is blunt, equipped both jaws equal in length and with thick lips. The anterior nares end hanging over the upper lip in about 1 mm long tubes. The viewing distance is less than the diameter of the eyes. The tail fins stem is taller than wide. Marbled gobies are yellowish, greenish or brownish gray, the males are black during the spawning period. All fins wear brown dot rows. Under the eye there is a dark spot, which is lined rear know at the beginning of the caudal fin, a black, bright fringed triangle.

  • Fins formula: Dorsal 1 VI - VII / 0, 2 I/14-18 Dorsal, Anal I/11-16.
  • Dandruff formula: ( 36) 38-46 (48 ) ( MLR)

Dissemination

The original range of the marbled goby are rivers that flow into the Black Sea, the Caspian Sea and the Sea of ​​Azov. In the Danube they were originally only available to the mouth of March. It also occurs in the Lake Neusiedl and in lagoons at the edge of the seas and in the rivers Struma and Evros, which open into the Aegean Sea.

Via the Main -Danube Canal, this kind could spread lately to the Rhine. Presumably through ballast water, the animals were introduced in North America. There are deposits in the St. Clair River, the Detroit River and the western part of Lake Erie.

552039
de