Krobia (genus)

Krobia xinguensis

Krobia is a genus of South American cichlids. The genus occurs in rivers of the Guayana three - countries, in some southern opening into the Amazon drains the Guiana Shield and the upper Rio Xingu in Brazil. The scientific name is in Suriname the common name for various cichlid. The Krobia species were brought to the list of species in the genus Aequidens collection.

Features

Krobia species can reach just over twelve inches in total length. Their shape is similar to the genera of cichlid Bujurquina, Tahuantinsuyoa and the Blaupunkt cichlid ( Andinoacara pulcher ). The body is oval, laterally flattened and high backs. The brow line is rounded. The body height is 40 to 50.8% of standard length. The muzzle is deep and terminally.

From the upper edge of the gill cover there is a longitudinal band which is often resolved to stains, to the posterior end of the dorsal fin extends. Under the eye there is often a vertical line. Lie one above the other three binding between the eyes. Another feature of the head markings are colored framed reins stripes that run to the eyes from the rear end of foot column. The caudal fin is without pattern or dark with light spots that are smaller in the ventral caudal half than in the upper half of the caudal fin. Females are less high backs, their fins remain shorter.

Fins formula: Dorsal XIII-XV/9-11, Anal III/7-9.

The pectoral fins are asymmetrical, the fourth dorsal spine is the longest; at the pelvic fins it is the first. The caudal fin is currently completing or slightly emarginate. It is supported by 16 main fin rays and six other fin rays. The base of the dorsal fin is scaly, the paired fins are unbeschuppt. Pages and throat are covered with comb scales. The upper part of the lateral line is three rows of scales on the bottom and three ( at the beginning ) to 1.5 scale rows below the dorsal fin base. In front of the pelvic fins are located roundhouse. The Vorkiemendeckel is scaleless, the gill cover set with two vertical rows of scales.

Reproduction

Krobia species spawn between transportable substrates, for example between fall foliage. They form a man - mother family, that is, the female guarded and befächelt the nest, while the male defends the territory. After hatching, the larvae are initially sheltered in small dug in the seabed pits and out according to the free-swimming by both parents and protected.

Types and distribution

  • Krobia guianensis ( Regan, 1905), Demerara in Guyana to Cottica in Suriname.
  • Krobia itanyi ( Puyo, 1943), chestnuts ( border between French Guiana and Suriname).
  • Krobia petit ella Steele et al., 2013, from the river Berbice in eastern Guyana.
  • Krobia xinguensis Kullander, 2012, Rio Xingu basin and source areas in the state of Mato Grosso / Brazil.

There are two additional, previously undescribed species in French Guiana.

Swell

  • Claus Schaefer, Torsten Schroer: The great encyclopedia of fighting dogs, Ulmer Verlag, Stuttgart 2004, ISBN 3-8001-7497-9
  • Krobia on Fishbase.org (English)
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