Oceanic but sometimes found in coastal waters (Ref. 9354). Generally above the thermocline (Ref. 9354), preferring temperatures of 18°C to 22°C (Ref. 9987). Larvae are frequently encountered at temperatures above 24 °C (Ref. 9702). Migrate toward temperate or cold waters in the summer and back to warm waters in the fall. Adults are opportunistic feeders, known to forage for their food from the surface to the bottom over a wide depth range (Ref. 9702). Feed mainly on fishes (Atlantic mackerel, barracudinas, silver hake, redfish, herring and lanternfishes (Ref. 5951); also on crustaceans and squids (Ref. 9354). They use their sword to kill their prey (Ref. 9354). Large individuals may accumulate large percentages of mercury in its flesh (Ref. 9354). Are batch spawners (Ref. 51846). Spawning takes place in Atlantic during spring in southern Sargasso Sea. Migrate to cooler waters to feed (Ref. 4689). Females grow fastest. Determination of age is difficult since the otoliths are very small and scales are missing in adults. Year rings have been successfully counted on cross sections of the fin rays (Ref. 35388). Pelagic eggs measure 1.6-1.8mm and the newly hatched larvae is 4 mm long. Sword is well developed at a length of 10mm and young live pelagically in the upper water layers where they quickly develop into very voracious predators (Ref. 35388). Mt DNA restriction analysis reveal that genetic differentiation occurs between populations inhabiting the Mediterranean Sea and the tropical Atlantic ocean, indicating little genetic exchange occurring between the two (Ref. 12784). Good food fish, marketed fresh or frozen, and can be made into sashimi, teriyaki or fillets (Ref. 9354).
大洋性的但是有时发现于沿岸水域.(参考文献 9354) 通常在温水层 (参考文献 9354) 之上, 喜欢 18 °C 的温度胜过 22 °C.(参考文献 9987) 仔鱼时常在 24 °C 上面的温度被见到。 (参考文献 9702) 向温带或者寒冷水域回游夏天时而且游回温暖的水域秋天时。 成鱼是在一个宽的深度范围之上被知道到从水表到底部搜寻食物的随机捕食者。 (参考文献 9702) 使用他们的剑杀他们的猎物。 (参考文献 9354) 主要捕食鱼也捕食甲壳动物与乌贼.(参考文献 9354)好食用魚, 生鮮或冷凍地在市場上銷售, 而且能被製成生魚片,串烤或魚排.(參考文獻 9354) 大的個體可能在它的肉累積高百分比的汞。 (參考文獻 9354) 產卵發生於大西洋春天時在藻海南部中。 雌性生長得最快速。 由於耳石是非常小而成魚的鱗片消失,年齡的鑑定很困難。 年輪曾經在鰭條的橫切面上成功計算出來.(參考文獻 35388) 大洋性的卵尺寸 1.6-1.8 mm 與最近孵化的仔魚是 4 mm 長。 劍是發展良好的,在體長 10 mm 與幼魚大洋性地住在上層水域在那裡它們很快地發展成非常狼吞虎嚥的掠食者.(參考文獻 35388) Mt DNA 限制分析揭露遺傳的區別在棲息於地中海的族群與熱帶大西洋的族群之間出現, 指出出現在兩者之間的小的遺傳交換。 (參考文獻 12784)