Fundulus heteroclitus (Linnaeus, 1766)

Mummichog
Fundulus_heteroclitus_01_compr Fundulus_heteroclitus_02

Description 1

Small species, reaching sizes of 10 cm and a maximum of 15 cm. Dorsal fin with 11-4 radials and anal fin with 10-11. Superior mouth with anterior teeth. Between 37-42 scales in maximum longitudinal line. Very patent sexual dimorphism: males are larger than females and have thick transversal bands on both flanks. Females are grey in colour with some vertical stripes.

Biology 1

Reproduction period of April-June. The female lays the eggs on submerged vegetation. It has high reproductive plasticity and has even adapted so that, in intertidal zones, eggs can be developed both in and out of the water (they remain dry at low tide until the tide returns). Mostly zoophagous and part herbivore.

Habitat 1

Lives in fresh, brackish and hypersaline waters. A very gregarious species, sometimes forming dense shoals.

Sources 1

Spanish Catalogue of Exotic Invasive Species, Atlas y Libro Rojo de los peces continentales [Atlas and Red Book of Continental Fish of Spain].

Spanish Catalogue of Exotic Invasive Species - Fishes 1

http://www.magrama.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), http://natusfera.gbif.es/guide_taxa/122

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