Channa spp. (Scopoli, 1777)

Snakehead fish
Channa_spp_01 Channa_spp_02

Description 1

A fresh water fish with subaquatic respiration and air respiration of up to 1 m. Large body, narrowing towards the tail, large dorsal fin equal to the anal fin. The caudal fin is truncated, not round. All are boneless. Small head with large scales on the upper part, which looks like a snake's head. Large mouth with sharp teeth and a protruding lower jaw.

Biology 1

These fish are predatory, aggressive, voracious, omnivores. They feed on zooplakton as well as algae, invertebrates, fish, amphibians, reptiles and small mammals. They can reproduce up to 5 times annually, meaning that a female can release up to 75,000 eggs a year.

Habitat 1

They have not been found in Spain, in Europe the Channa argus and Ch. micropeltes species stand out. They can be found in rivers, lakes, reservoirs and wetlands. Their peculiar breathing system allows them to survive for up to 4 days out of water, thus they can be easily transported; they can undertake migrations of 400 metres on land, providing it is wet.

Sources 1

Spanish Catalogue of Exotic Invasive Species and Document sheets of the Exotic Invasive Species Act 630/2013 (GEIB)

Spanish Catalogue of Exotic Invasive Species - Fishes 1

http://www.mapama.gob.es/es/biodiversidad/temas/conservacion-de-especies/especies-exoticas-invasoras/ce_eei_peces.aspx

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY-SA), http://natusfera.gbif.es/guide_taxa/2032

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