Southern conger: Difference between revisions
GrahamBould (talk | contribs) First edition |
(No difference)
|
Revision as of 19:35, 23 July 2006
| Common conger | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | |
| Species: | C. verreauxi
|
| Binomial name | |
| Conger verreauxi Kaup, 1856
| |
The common conger, Conger verreauxi, is a conger of the family Congridae, found in the eastern Indian Ocean and south west Pacific Ocean, including southern Australia and New Zealand, at depths down to 100 m in broken rocky reef areas. Length is up to 2 m and weight may be up to 50 kg.
The common conger is similar to the common freshwater eels, but with larger eyes and a dorsal fin which originates further forward, above the hind tip of the pectoral fin. Like all other conger eels the skin is smooth and scaleless. They hide in caves and crevices during the day and hunt their prey of crabs, shrimps and small fish by night.
Young common conger eels are grey, paler on the belly, but adults become progressively darker and the largest may be almost blue-black. When they mature the alimentary canal and other organs degenerate, the teeth fall out, the skeleton decalcifies, and the gonads develop tremendously until they account for almost a third of the total body weight. The eels then migrate off-shore to deepwater spawning grounds where each eel releases 3 to 6 million eggs. The spent adults then die.
References
- Froese, Rainer; Pauly, Daniel (eds.). "Conger verreauxi". FishBase. May 2006 version.
- Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8