Thayeria

Angular float ( Thayeria boehlkei )

The genus belongs to the genuine Thayeria tetras ( Characidae ) and consists of three types. It comes in the rivers of the northern tropical South America before, including in the Amazon, Rio Araguaia, chestnuts, Rio Tocantins and the Rio Guaporé. The genus was named for N. Thayer, who has financed a large fishing expedition in South America from 1865 to 1866.

Features

Thayeria species are from 5 cm to 8 cm. A characteristic feature is the oblique swimming behavior of the fish, with the head directed to the water surface and provided with a black ribbon, significantly larger lower lobe of the caudal fin to the body of water. The body is elongated, laterally strongly flattened and has a shiny silver color. Thayeria species have a more or less pronounced black stripes parallel to the incomplete lateral line. The proximal portion of the tail fin base is scaly. An adipose fin is present. The anal fin is long and runs in the top third of a point. The eyes are relatively large. On the premaxilla are two rows of teeth, the maxilla is edentulous.

Species

• Angular float ( Thayeria boehlkei Weitzman, 1957)
• Thayeria ifati Gery, 1959
• Pinguinsalmler ( Thayeria obliqua Eigenmann, 1908)