Scientific Name	Chiasmodon niger   Pronounce			by: Lab of Fish Ecol. and Evo., BRCAS
Author	Johnson, 1864	Depth	750 - 1500M
Chinese	黑叉齒魚	Poisonous Fish	No
Family_Chinese	叉齒魚科	Economic Fish	No
Family	F432　Chiasmodontidae	Edible Fish	No	Chinese In Mainland China	黑叉齒龍鰧
Max Length	25 cm	Aquarium Fish	No	Common Name	黑狗母
Distribution in World	global	Distribution in Taiwan	South、North East
Habitats	Ocean、Deep Sea	Holotype Locality	off madeira
Synonyms	Chiasmodon bolangeri, Chiasmodus niger, Ponerodon vastator
Reference	臺灣魚類誌(沈等, 1993)；Fishbase(2006)；Fishes of Japan(Nakabo, 2002)；The Live Marine Resources of the Western Central Pacific, Vol.6(FAO, 2001)  Johnson, J. Y. 1864 沈世傑 編 Shih-Chieh Shen ed. 1993 Nakabo T. 2002 Nakabo T. 2002
Specimen List	ASIZP0063821. ASIZP0065445. ASIZP0900535. SU23553.
Common Name	Black swallower
Redlist Status	Not in IUCN Redlist
Characteristic	Body elongate. Head with elongate or rounded snout, longer than eye. Mouth large, premaxilla and maxilla non-protractile, slender, firmly connected distally, and extending well beyond posterior margin of eye. Both jaws with large and long cannine-like teeth, one or all of first 3 teeth longer than all teeth behind 3rd on both jaws. Two separate dorsal fins, first short with XI spines, second long with 29 soft rays; anal fin long with I spine and 26 to 28 soft rays. Body naked without spinoid scales. Photophores absent. Lateral line a series of obvious pores midlaterally along length of body. Body uniformly dark brown or black.
habitats	Mesopelagic to bathypelagic species. Feeds on whole fish, often of individuals longer than themselves. Most specimens were taken at depths greater than 750 m.
Distribution	Widespread in the tropical and temperate waters. It is found in southwestern Taiwanese waters.
Utility	No commercial value.