Life Cycle
provided by Fishbase
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205).
Biology
provided by Fishbase
Ovoviviparous (Ref. 50449). Better reference needed.
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- Cristina V. Garilao
分布
provided by The Fish Database of Taiwan
分布於西北太平洋，包括東海南部及臺灣北部海域。
利用
provided by The Fish Database of Taiwan
為較罕見之大型魟類。
描述
provided by The Fish Database of Taiwan
體盤菱形，前緣微凹，與吻端成30-35度；體盤寬與體盤長約略等長，最寬處在體盤的中部。吻長而尖，顯著突出；吻長等於體盤長的0.4倍，比眼間隔大約4倍。眼很小，稍突出，眼徑約與噴水孔的0.6倍。口小，口前吻長比口寬大4.5倍。口底無乳突。尾中細長，為體盤長的1.7倍；背側面之皮褶完全消失，腹背側面之皮褶完全消失，或短而弱，位於尾刺的相對位置；尾刺1枚。幼體光滑，成魚在吻上、胸鰭外側及體背中央具小棘，另外在尾部自硬棘後方至尾末端有許多小棘。背面淡褐色；腹面淡白。/Dasyatis
microphthalmus/為本種之同種異名。
棲地
provided by The Fish Database of Taiwan
主要棲息於近海的沙泥海域中。以底棲甲殼類為主要食物。屬於卵胎生魚類，一次可以產下好幾尾小土魟。尾刺有毒腺，是危險的海洋生物。
Smalleye whip ray
provided by wikipedia EN
The smalleye whip ray (Himantura microphthalma) is an obscure species of stingray in the family Dasyatidae. It is known only from a single specimen collected off Taiwan and assigned to the genus Dasyatis by J.T.F. Chen in 1948. In 1982, Leonard Compagno and Tyson Roberts moved it to the genus Himantura based on its apparent lack of a tail fold. In 2006, B. Mabel Manjaji-Matsumoto and Peter Last determined that the type specimen had been lost since Chen's description and that no further specimens have emerged since. Therefore, they considered this species to be a nomen dubium, perhaps conspecific with Dasyatis acutirostra.[1]
References
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^ Manjaji-Matsumoto, B.M. and P.R. Last (2006). "Himantura lobistoma, a new whipray (Rajiformes: Dasyatidae) from Borneo, with comments on the status of Dasyatis microphthalmus". Ichthyological Research. 53 (3): 290–297. doi:10.1007/s10228-006-0350-6. S2CID 22873832.
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Smalleye whip ray: Brief Summary
provided by wikipedia EN
The smalleye whip ray (Himantura microphthalma) is an obscure species of stingray in the family Dasyatidae. It is known only from a single specimen collected off Taiwan and assigned to the genus Dasyatis by J.T.F. Chen in 1948. In 1982, Leonard Compagno and Tyson Roberts moved it to the genus Himantura based on its apparent lack of a tail fold. In 2006, B. Mabel Manjaji-Matsumoto and Peter Last determined that the type specimen had been lost since Chen's description and that no further specimens have emerged since. Therefore, they considered this species to be a nomen dubium, perhaps conspecific with Dasyatis acutirostra.
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