Three-banded barb

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Three-banded barb
Puntius arulius.jpg

Three- banded barb ( Dawkinsia arulius )

Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : Carp fish (Cyprinidae)
Genre : Dawkinsia
Type : Three-banded barb
Scientific name
Dawkinsia arulius
( Jerdon , 1849)

The three- banded barbel ( Dawkinsia arulius , Syn .: Puntius arulius , Barbus arulius ; after the local name "Aruli"), also called splendid barbel , is a freshwater fish from the carp family (Cyprinidae). Their distribution area is in the flow areas of the Kaveri , Sharavathi and Tunga in southeastern India. The apparently large distribution area breaks up into about six to eight fragmented local occurrences and actually only covers about 300 km² in the upper reaches of the rivers.

The populations in Thenmalai and Kulathupuzha , which were formerly assigned to the three- banded barbel, are now considered an independent species ( Dawkinsia exclamatio ).

features

Three-banded barbel are a maximum of twelve centimeters long and are of the typical barbel shape. Your body is only slightly flattened laterally, the back brownish, the body sides silvery to yellowish with a reddish sheen and two black oval spots under the dorsal fin and above the anal fin. Another black spot is on the tail fin stalk. The scales above the full side line show a greenish tinge. The throat and abdomen are yellowish. The dorsal fin is yellowish to reddish and has bright red tips, the anal fin has a red edge, the pelvic fins are whitish. During the mating season, the males show a whitish spawning rash on the tip of the snout. Overall, they are more splendidly colored and grow larger.

The three- banded barb differs from the closely related black-spotted barb ( Dawkinsia filamentosus ), D. singhala and D. assimilis , by its conspicuous black spots in front of the anal fin, and from D. exclamatio by the lack of an elongated, teardrop-shaped black spot above the anal fin. The main difference to D. srilankensis is located in the closed lower lip of the three-band Barbe, of D. srilankensis instructs the mandibular symphysis a gap. The three- banded barb differs from D. tambraparniei in the absence of the filament-like elongated branched dorsal fin rays in adult males and the shorter barbels .

Way of life and exposure

The three-banded barbel occurs in swarms in large streams, rivers, lakes, undisturbed, shady rainforest rivers and streams with an acidic pH .

The IUCN classifies the species as endangered . The construction of dams and the catch for aquarium purposes are considered to be the main reasons for the endangerment of the species.

literature

  • Günther Sterba : Freshwater fish of the world , Weltbild Verlag, Augsburg 1998, ISBN 3-89350-991-7 .
  • Axel Zarske: Barbus arulius. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. 2 volumes. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 125.

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