Lowfin Gulper Shark

fieldmarks: No anal fin, two dorsal fins with large spines, bladelike unicuspidate teeth in upper and lower jaws, with lowers much larger than uppers, a moderately long and broad snout, very long first dorsal fin and high second dorsal, blocklike, sessile-crowned, wide-spaced, cuspidate lateral denticles, and rear tips of pectoral fins narrowly angular and strongly extended. Snout moderately long, broadly parabolic, preoral snout equal or somewhat greater than mouth width but shorter than distance from mouth to pectoral origins;

upper anterolateral teeth with semioblique or oblique cusps.

First dorsal fin very low and long; second dorsal moderately large, nearly as high or slightly higher than first, with base about 1/2 to 3/5 length of first dorsal base, and spine origin over inner margins of pelvic fins; distance from first dorsal insertion to origin of second dorsal spine about as long as tip of snout to pectoral midbases in adults and subadults; free rear tips of pectoral fins formed into narrow, angular and elongated lobes that reach well beyond the level of first dorsal spine, inner margins slightly shorter than distance from second dorsal spine to caudal origin; caudal fin with a shallowly concave to weakly notched posterior margin in adults and subadults.

Lateral trunk denticles not overlapping each other, blocklike, with crowns sessile on bases and without pedicels, crowns elongated and longitudinally rhomboidal in adults, with a strong main cusp and no lateral cusps on their posterior edges in adults.

Eastern North Atlantic: Portugal, Senegal, Ivory Coast to Nigeria. Western Indian Ocean: South Africa and Mozambique Channel. Western Pacific: Taiwan Island.

Adults reach at least 160 cm; adult males from 72 to 128 cm and females from 88 to 144 cm; size at birth about 36 cm.

A large deepwater dogfish of the outer continental shelves and upper slopes,at depths between 300 to 1400 m. Ovoviviparous, number of young 1 to 6 per litter.

Eats bony fishes, squid, small dogfish sharks, and lobsters.

Primarily utilized in the eastern Atlantic, and captured there in bottom trawls and with fixed bottom nets and line gear. Dried and salted for human consumption, and processed for fishmeal. Fished also off Taiwan Island, Province of China.

A large, stout gulper shark with a broad snout, a long, low 1st dorsal fin and a high 2nd dorsal fin; pectoral rear tips moderately long; denticles low, flat and smooth (Ref. 5578). Pearl-grey in color (Ref. 5578).

Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Number of young 1 to 6 per litter; size at birth 33-36 cm TL (Ref. 247, Ref. 58048). Distinct pairing with embrace (Ref. 205).

Dorsal spines (total): 2; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 0

A large deepwater dogfish of the outer continental shelves and upper slopes. Feeds on bony fish, small dogfish sharks, squids, and lobsters.

A large deepwater dogfish of the outer continental shelves and upper slopes (Ref. 247). Feeds on bony fish, small dogfish sharks, squids, and lobsters (Ref. 247). Ovoviviparous (Ref. 50449). Utilized as food fish and as fishmeal (Ref. 247).

fisheries: minor commercial; price category: unknown; price reliability:

廣泛分布於世界三大洋之大部分溫帶暖水域及熱帶水域。臺灣則分布於南部及東北部海域。

主要為底拖網及流刺網捕獲，一般被利用於鮮食或製成魚槳、魚丸等。

體稍粗壯延長，頭平扁而寬；尾粗短；尾柄無尾前凹窪；吻長稍大於眼徑，口前吻長相等或稍大於口裂寬而短於口裂到胸鰭起點之距離；眼大，長橢圓形，兩端尖；鼻孔頗小，幾乎橫列，外側位，前鼻瓣正三角形；鼻孔間距寬，比鼻孔長約二倍；口裂淺弧形，幾乎橫平；唇褶短，口側距一斜行深溝；齒式20-1-19/15-1-15，上下顎齒不同形，二行在使用；上顎齒三角形，較小，具一尖齒頭，邊緣光滑，正中齒直立，兩側齒向後漸傾斜；下顎齒較寬大，齒頭斜向口角；噴水孔大，半月形，位於眼睛後上方；鰓裂向後漸次增大；盾鱗不重疊；具一棘突，基板不規則方形，側視無細柄。背鰭二枚，各具一硬棘；第一背鰭低而長，上角廣圓，下角尖突，硬棘基底被皮膚包埋，僅露出尖端1/3，棘長小於鰭前緣；第二背鰭鰭高等於或稍大於第一背鰭，基底長為第一背鰭基底長的1/2～3/5，硬棘起點位於腹鰭內緣上方；第一背鰭基底末端到第二背鰭棘起點之距離約等於吻端到胸鰭基底中點之距離；尾鰭寬短，尾椎軸稍上翹；上葉發達，後緣有一缺刻；腹鰭起點距第二背鰭較距第一背鰭近，前後緣連續呈半弧形，後角尖而微突；胸鰭中大，後角延長尖突，其末端伸越第一背鰭棘下方；外角圓，後緣稍凹。體紅棕色，腹部色淡。

主要生活於大陸棚和島嶼上層斜坡之大型深水鯊，棲息深度在300-1,400公尺間。主要以底棲硬骨魚為食，但也捕食小型狗鮫、頭足類及甲殼類等。卵胎生，每產1-6子。成魚至少160 公分；雄成魚長72-128 公分，雌成魚在88-144 公分，剛產子鯊長約36 公分。

The lowfin gulper shark (Centrophorus lusitanicus) is a large deepwater dogfish in the family Centrophoridae.

A large deepwater dogfish of the outer continental shelves and upper slopes. Feeds on bony fish, small dogfish sharks, squids, and lobsters. Ovoviviparous, number of young 1 to 6 per litter.