Redigobius

Redigobius bikolanus

Redigobius is a genus of secondary freshwater fish from the family of gobies ( Gobiidae ). Its scientific name comes from the Latin, " Redigo " means reduce and points to the decreased number of spines in the type species Redigobius out dispar.

Dissemination

The genus is found on the coasts of the tropical Indo-Pacific from the east coast of Africa (South Africa, Mozambique) about Madagascar to Japan, Australia, Guam, Fiji and Tonga in freshwater and brackish water zones. The fish live in the lower reaches of rivers and in lakes and ponds in the catchment area of this river sections, also in streams that flow directly into the sea, in estuaries, mangroves and seagrass beds.

Features

Redigobius species are 4 to 5 inches long. They differ from most other gobies, for a cylindrical, laterally flattened body is typically only slightly, by their moderately long, relatively high-backed body that is laterally strongly flattened. Prior to the first dorsal fin are greatly enlarged scale, of which the first, which may be larger again, rests on the eye space. The head is scaly otherwise only on the gill covers.

Fins formula: Dorsal 1 VI, dorsal 2 I/6-8, Anal I/4-7. Dandruff formula: SL 20-30.

The posterior rays of the dorsal fin and the anal fin are elongated in males and can reach up to the tail fin. Redigobius species are usually brownish to gray and often show a double dark spot on the caudal fin base, vertical dark stripes on the sides of the head and spotted sides of the body.

Way of life

Redigobius species live as revier forming fish in river sections with abundant vegetation, the spawning season - during the stay in the sea - in seagrass beds. They prefer average water layers when hiding missing, the body of water. They feed on zooplankton and small bottom-dwelling invertebrates.

Reproduction

The reproductive biology of the genus is known in part for just two species. Redigobius - species migrate to spawn in the sea. From aquariums observations we know that relate the reproductive prepare animals close caves and crevices. The slip in the 1.9 to 2.0 mm long juveniles are already pigmented in contrast to other Grundeljungen and have a pretty stocky body. The juveniles initially live pelagic.

Species

So far, 12 valid species have been described:

  • Redigobius amblyrhynchus ( Bleeker, 1878)
  • Redigobius balteatops (Smith, 1959)
  • Vaimosagrundel ( Redigobius balteatus ) ( Herre, 1935)
  • Redigobius bikolanus ( Herre, 1927)
  • Redigobius chrysosoma ( Bleeker, 1875)
  • Redigobius dewaali ( Weber, 1897)
  • Redigobius dispar (Peters, 1868)
  • Redigobius lekutu Larson, 2010
  • Redigobius macrostoma ( Günther, 1861)
  • Redigobius nanus Larson, 2010
  • Redigobius Penango ( Popta, 1922)
  • Redigobius tambujon ( Bleeker, 1854)
Gobionellinae Fish fin FishBase
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