Scientific Name	Tylosurus crocodilus crocodilus   Pronounce			by: Lab of Fish Ecol. and Evo., BRCAS
Author	(Péron & Lesueur, 1821)	Depth	0 - 13M
Chinese	鱷形叉尾鶴鱵	Poisonous Fish	No
Family_Chinese	鶴鱵科	Economic Fish	Yes
Family	F255　Belonidae	Edible Fish	Yes	Chinese In Mainland China	鱷形圓頜針魚
Max Length	150 cm	Aquarium Fish	No	Common Name	青旗、學仔、白天青旗、圓學(澎湖)
Distribution in World	India Ocean to Pacific Ocean	Distribution in Taiwan	East、West、South、North、North East、PonFu、ShaoLiuChew、LanI Is.、Greeb IS.、Tung Sa IS.
Habitats	Ocean、Benthos、Coastal、Lagoon、 Coral&Sand	Holotype Locality	Mauritius, Mascarenes, southwestern Indian Ocean
Synonyms
Reference	臺灣魚類誌(沈等, 1993)；The Live Marine Resources of the Western Central Pacific, Vol.4(FAO,1999)；Fish of Japan(Nakabo, 2002)  沈世傑 編 Shih-Chieh Shen ed. 1993 Al-Hassan, L.A.J. etc. 1997 Al-Hassan, L.A.J. etc. 1997 Carpenter, K. E. etc. 1999 Nakabo T. 2002
Specimen List	ASIZP0055056. ASIZP0060595. ASIZP0065037. ASIZP0065065. ASIZP0065066. ASIZP0071091. ASIZP0700190. ASIZP0802574. ASIZP0804214. ASIZP0805840. ASIZP0912574. ASIZP0914214. ASIZP0915840. FRIP20539. FRIP21478. NMMSTP00675. NTMP0388. NTUM04869.
Barcode	2015-10-23,Chia-Hao Chang,CO1,%
Common Name	Needle fish; Needlefish; Ocean piper; Crocodile needlefish; Crocodile longtom; Houndfish; Hound needlefish; Longjaw; Giant long-tom; Fork tail alligator gar; Gar; Hound; Garfish; Guardfish
Redlist Status	Not in IUCN Redlist
Characteristic	Body elongate, rounded in cross-section. Upper and lower jaws greatly elongate and studded with sharp teeth jaw teeth point anteriorly in juveniles; gill rakers absent. Anterior part of dorsal and anal fins with relatively high lobes; dorsal-fin rays 21 to 25; anal-fin rays 19 to 22; pectoral and pelvic fins long; pectoral-fin rays 13 to 15; a distinct black lateral keel on caudal peduncle; caudal fin deeply forked, lower lobe much longer than upper. Predorsal scales numerous and tiny, 271 to 340. Body dark bluish green above, silvery below; a dark blue stripe along sides; juveniles with elevated black lobe in posterior part of dorsal fin which is lost with growth; scales and bones green.
habitats	A pelagic species found over lagoon and seaward reefs. Solitary or in small groups. Feeds on fishes. Feared by fishers because they can cause puncture wounds with their sharp snouts when jumping out of the water, e.g. when alarmed or attracted to lights a
Distribution	Widely distributed in the Indo-West Pacific from Red Sea and South Africa to French Polynesia, north to Japan, south to New South Wales, Australia. It is common in waters around Taiwan.
Utility	Although sold fresh and considered a good food fish, its market is limited due to the green-colored flesh.