Climbing fish

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Climbing fish
Climbing fish (Anabas testudineus)

Climbing fish ( Anabas testudineus )

Systematics
Spinefish (Acanthopterygii)
Perch relatives (Percomorphaceae)
Order : Climbing fish species (Anabantiformes)
Subordination : Labyrinth fish (Anabantoidei)
Family : Climbing fish and bush fish (Anabantidae)
Genre : Climbing fish
Scientific name
Anabas
Cloquet ( ex Cuvier ), 1816

The climbing fish ( Anabas ) are a genus of freshwater fish from the family of climbing fish and bush fish (Anabantidae). The genus occurs with two species on the Indian subcontinent and in Southeast Asia west of the Wallace line . The generic name Anabas is derived from the Greek ("anabainein" = to climb up) and refers to the ability of the fish to leave the water and go to other bodies of water.

features

Climbing fish have a moderately elongated body and become 20 to 30 cm long. The head and mouth are relatively large. There are two nostrils on each side of the head. The edges of the gill covers are studded with numerous spines. The labyrinth organ is built quite simply. The dorsal and anal fins are elongated, the hard-nosed area being longer than the soft-nosed area. The pelvic fins are not elongated, the caudal fin is rounded. The sideline is interrupted, the part on the rear trunk section runs two rows of scales lower.

Climbing fish are gray-brown to gray-green in color. The fins are lighter. The gill cover and the base of the tail have a stain.

Way of life

Climbing fish are found mainly in slowly flowing and stagnant waters that are divided by rocks, roots or plants. They feed on insects, crustaceans , other invertebrates, and small fish. In contrast to many other labyrinth fish , climbing fish do not practice brood care. The laid eggs rise to the surface.

On land, climbing fish move with splayed gill covers by powerful blows of the caudal fin. They can survive dry periods in the mud. Like other fish, climbing fish secrete ammonia via their gills as a nitrogen carrier . Outside the water they cannot use their gills for breathing or excretion , like many land animals and like many other bony fish in the intertidal zone, they then secrete urea as a nitrogen carrier via their mucous membranes , which has the advantage that this urea in turn contributes to the moisture retention by he binds air humidity.

species

literature

  • Hans-Joachim Richter: The book of the labyrinth fish. Verlag J. Neumann-Neudamm, 1983, ISBN 3-7888-0292-8 .
  • Günther Sterba (Ed.), Gert Brückner: Encyclopedia of Aquaristics and Special Ichthyology. Neumann-Neudamm, Melsungen u. a. 1978, ISBN 3-7888-0252-9 .
  • Jörg Töpfer: Anabas Cuvier & Cloquet, 1816. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 49.

Single receipts

  1. ↑ Anabas in the Catalog of Fishes (English)
  2. ↑ M. Ramaswamy, T. Gopalakrishna Reddy: Ammonia and urea excretion in three species of air-breathing fish subjected to aerial exposure. In: Proceedings: Animal Sciences , Vol. 92, No. 4, 1983, pp. 293-297.

Web links

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