Sunday, 11 October 2015

Wolf Herring


Name
The dorab wolf-herring, blackfin wolf herring, Ikan Parang, Chirocentrus dorab is a fish species from the Chirocentrus genus of the Chirocentridae family. Chirocentrus is from the Greek cheir meaning hand and kentron meaning sting. Dorab is from the Arabic language word darrab (ضرّاب) and the word is probably a corrupted form of durubb (دُرُبّ) the name for goldfish in Arabic. It has another Arabic name, lisan (لسان) [4] which means tongue.

Appearance
Blackfin wolf-herrings are narrow elongated fish, so named for the black markings on the upper part of the dorsal fin and the wolf-like canines protruding from their mandible and premaxilla. These black markings set this species apart from its closest relative Chirocentrus nudus, whitefin wolf-herrings. The wide mandible of blackfin wolf-herrings appears to point almost directly upward when their mouth is closed. Members of the family Chirocentridae have been characterized as long herrings. Dorsal spines (total): 0; Anal spines: 0. Scales numerous, small, usually lost. Silvery; back bright blue (fading to grey); flanks bright silver. The slightly shorter pectoral fin and the black marking of the upper part of the dorsal fin are the only satisfactory characters separating this species from the white fin wolf herring, Fins spineless; with numerous dagger-like teeth. Samples of both the species were collected in Palk Bay and the Gulf of Mannar around the Rameswaram Island from July 1968 to June 1969. Altogether 436 fish (Black fin wolf herrings) of lengths ranged 225-712 mm were examined. Out of them 83 males and 353 females in the length ranges of 225-712 mm. The specimens were measured for length to the caudal fork (in mm), weighed (in grams) and sex examined in the fresh state. 

Location
Indo-Pacific: probably throughout the warmer coastal waters, from the Red Sea and East Africa to the Solomon Islands, north to southern Japan, south to northern Australia. Recently reported from Tonga, Djibouti, Egypt, Eritrea, Kenya, Madagascar, Mauritius, Mayotte, Mozambique, Rodriguez, Seychelles, Somalia, South Africa, Sudan, Tanzania, Andaman Is. Bahrain,Bangladesh, Brunei Darsm, Cambodia, China, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Korea (South), Kuwait, Macau, Malaysia, Myanmar, Oman, Pakistan, Philippines, Qatar, Ryukyu Is. Saudi Arabia, Singapore, Sri Lanka, Taiwan, Thailand, Timor-Leste, United Arab Em. Viet Nam, Yemen, Australia, Fiji, New Caledonia, Palau, Papua New Guinea, Solomon Is. Tonga, Vanuatu,

Habitat
Blackfin wolf-herrings prefer warm coastal waters, often in inland areas. They inhabit brackish and marine waters up to depths of 120 m. This species, however, is most commonly found in turbulent waters at depths from 9 to 28 m. frequenting coral reefs, which are potential hunting grounds, Unlike most herring fishes, blackfin wolf-herrings are often found in small groups rather than large schools. However, schooling maybe more prevalent in this species during its larval stage to avoid predation. It is a coastal fish, found in marine, brackish and estuarine waters

Spawning Season/Area
Intra-ovarian eggs of blackfin wolf-herrings reach maturity at 50 to 65 millidarcies (measurement of permeability) and are then released by the female. hatched larvae are tubular eel like and have a duck bill shaped head , species caught during March were commonly caught in the 40-50 cm range between 90gram-3kg, Males typically mature at smaller sizes than females. The growth rate remains constant in males until they reach 30 cm and in females until they reach 40 cm, after which there is a marked decline in growth rate.


Diet
As a carnivorous fish, blackfin wolf-herrings prey mainly on other members of the order Clupeiformes, as well as members of the class Cephalopoda (octopus and squid). Sardines, however, are preferred prey of this species, particularly white sardinella and goldstripe sardinella. Juveniles also display this carnivorous behavior, feeding on small shrimp, post-larvae, and early juvenile fish. The diet of blackfin wolf-herrings is seasonally consistent. As they feed primarily during the day. feeding on smaller fish and possibly crustaceans. they feed on blue sprat, also known as the delicate round herring or blueback sprat, contents found in stomachs also contained snapper, blennie, surgeon fish, and Baelama anchovy


Method of catching 
Lures , trolling , live bait , side note -have noticed in jigging videos that the lure is almost always hit on the head of the lure this nature could be due to the baitfish around in that area , one particularly of a spiny nature (scads?) when catching fish with bony jaws its highly likely that using a single hook rather than a treble hook will increase your catch rates, notes taken from a tiger fisherman 
Edible
They also act as host to marine leeches, Nerocila phaiopleura, which attach at the branchial/shoulder region of a host fish. Leeches do not cause harm to the fish while feeding. As the leech releases from its host, however, it leaves small skin lesions at its point of attachment. These lesions allow easy access for pathogenic microbes and infections like vibriosis. Vibriosis is an infection caused by a group of bacteria from the genus g. Vibrio. commercially fished, and marketed fresh or frozen

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Name
Whitefin wolf-herring, or Ikan Parang in Malaysian, Chirocentrus nudus is a fish species from the Chirocentrus genus of the Chirocentridae family, Chirocentrus is from the Greek cheir meaning hand and kentron meaning sting. Dorab is from the Arabic language word darrab (ضرّاب) and the word is probably a corrupted form of durubb (دُرُبّ) the name for goldfish in Arabic. It has another Arabic name, lisan (لسان) [4] which means tongue.

Appearance
Samples of both the species were collected in Palk Bay and the Gulf of Mannar around the Rameswaram Island from July 1968 to June 1969. Altogether 727 fish Whitefin wolf herrings of lengths ranged 153-832 mm were examined. Out of them 84 males and 314 females in the length ranges of 205-560 mm respectively were from the Palk Bay; and 120 males and 209 females in the length range of 238-560 mm and 350-832 mm respectively were from the Gulf of Mannar. The specimens were measured for length to the caudal fork (in mm), weighed (in gm) and sex examined the in fresh state.

Location
Comoros, Djibouti, Egypt, Eritrea, Kenya, Madagascar, Mayotte, Mozambique, Seychelles, Somalia, South Africa, Sudan, Tanzania, Andaman Is. Bahrain, Bangladesh, Brunei Darsm, Cambodia, China, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Jordan, Kuwait, Macau, Malaysia, Myanmar, Oman, Pakistan, Philippines, Qatar, Saudi Arabia, Singapore, Sri Lanka, Taiwan, Thailand, Timor-Leste, United Arab Em. Viet Nam, Yemen, Australia, Papua New Guinea, Solomon Is.
Habitat
Marine - Neritic ,saltwater brackish water, some cases of freshwater occurrences, The neritic zone is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately 200m in depth. shares same habitat as the black fin wolf herring 

Spawning ground/Season 
Spawning shown in Palk Bay and Gulf of Mannar around the Rameswaram Island for four years. The two species differ from each other in some respects and resemble each other in some other. Each species, too, shows differences in some aspects between the two localities. Generally, spawning season of C. nudus (White fin wolf herring) extends from February to July, intensive spawning taking place during April-June /July each year. the species caught during March exhibited ranges of 50cm to 1 kg

Diet
This species is also known to eat crabs in addition to its usual diet of smaller fish. anchovies , herring and, highly likely to share same eating habits as the black fin wolf herring 

Edible
In the South east coast of India this fish is prevalent to a host parasite during monsoon season resulting in a less than appealing flesh, commercially fished, and marketed fresh or frozen considered low cholesterol fish 40mg% cholesterol per 1kg

Method of catching 
Lures, live baits, trolling, fish that have bony jaws are better caught with single hooks over treble hooks ,as shown in the video, the fish sought after the head of the lure much like how yellowtail kingfish do when taking scads as bait due to the sickle spine on their backs, possibly one of the prey items of the wolf herring 

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