September 23, 2008

Indonesian shortfin eel

Anguilla bicolor bicolor






Family:
Order:
Anguillidae (Freshwater eels)
Anguilliformes (eels and morays)
Class: Actinopterygii (ray-finned fishes)
FishBase name: Indonesian shortfin eel
Max. size: 120 cm TL (male/unsexed; Ref. 48660); max. reported age: 20 years
Environment: demersal; catadromous (Ref. 51243); freshwater; brackish; marine







Biology: Migratory species which breeds in the ocean (Ref. 52331). Lives in fresh water areas as an adult, in estuaries and seas as young (Ref. 12693). Descends to the sea to spawn. Inhabits freshwater streams and pools, preferring marshy habitats (Ref. 41236). Found in rivers and creeks, commonly over rock bottoms and in deeper pools. Seldom occurs in large rivers (Ref. 6028). Restricted to lowland (coastal) reaches of river systems (Ref. 7248). Feeds on small fishes, crustaceans and mollusks. Reported to breed east of Madagascar; the south equatorial current probably carries the eel larvae and elvers towards the east coast of Africa where local coastal currents guide the elvers to suitable rivers which they invade and they stay there until sexually mature, when they return to their breeding grounds (Ref. 13337). Caught with various types of nets. Sometimes used in the aquarium trade (Ref. 6028).
Red List Status: Not Evaluated (Ref. 57073)
Dangerous: harmless

Data i take from http://www.fishbase.org

The Indonesian shortfin eel, Anguilla bicolor bicolor, is a subspecies of eel in the genus Anguilla of the family Anguillidae. It is found throughout the tropical coastal regions of the Indian ocean and western Pacific.

Showing the typical habits, diet and characteristics of the genus, this species grows to 1.2 m and can live for up to 20 years. Dorsal fin soft rays number 240–250, anal fin soft rays 200-220, Vertebrae between 105 and 109 in number. This fish is lighter underneath, being olive/blue-brown on top. It is easily confused with the Pacific shortfin eel, Anguilla obscura.

2 comments:

Álvaro said...

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himira said...

Shortfin?

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