Hemiramphus far
| Hemiramphus far | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Beloniformes |
| Family: | Hemiramphidae |
| Genus: | Hemiramphus |
| Species: | H. far |
| Binomial name | |
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Hemiramphus far (Forsskål, 1775) |
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| Synonyms | |
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Hemiramphus far, the halfbeak, black-barred halfbeak, black-barred garfish, barred halfbeak, barred garfish or spotted halfbeak, is a schooling marine fish in the family Hemiramphidae. It has an Indo-Pacific distribution and has invaded the eastern Mediterranean through the Suez Canal.
Hemiramphus far has a laterally compressed body which is elongate oval in cross-section and has a very long, beak-like lower jaw with a short upper jaw which is triangular and lacks scales; there is no preorbital ridge. The total number of gill rakers on first gill arch is 25-36 with and 21-27 on the second arch. It has short pectoral fins which do not extend past the nasal fossa when they are folded forwards. There are 3-9, normally 4-6, dark vertical bars on the sidesand the back is bluish in colour with silvery sides. The caudal fin is assymetrical with the lower lobe being longer than the upper lobe. The dorsal fin and the anal fin are located towards the tail. These fins are dark in colour. The meristic formula is D,12-15, A,10-12, P,11-13. The maximum length is 33 cm.
Hemiramphus far occurs in the Indian Ocean from the Red Sea and East Africa east into the Pacific Ocean as far as Samoa, north to the Ryukyu Islands and south to northern Australia and New Caledonia. H. far was first recorded in the Mediterraenan Sea off the coast of Palestine in 1927 and has spread northwards and westwards since, being recorded for the first time in Algeria in 2003 and Italy in 2014. It colonised the Mediterraean by way of the Lessepsian migration through the Suez Canal and is one of the few Lessepsian migrants to be recorded in the western basin of the Mediterraean.
Hemiramphus far is bathypelagic and is found in coastal waters of mountainous islands and continental shorelines; most frequently in areas of sea which are rich in vegetation and over sand flats. This is a sociablke soecies which forms schools. The adults are largely phytovores feeding mainly on sea grasses and, to a lesser extent. on green algae and diatoms. It breeds in estuaries, and in the more temperate parts of its distrbutiuon in the spring and summer. The eggs are attached to vegetation by sticky threads and once the larvae hatch they are planktonic.
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Wikipedia