
Also known as Angel shark
species of fish
angelshark
SPECIES
扁鯊(學名Squatina squatina)是扁鯊科下的一種鯊魚,曾一度廣佈在大西洋東北部的海岸水域。它們的身體扁平,胸鰭及臀鰭也很闊,可以將自己偽裝成為海床的一部份。它們的特徵是有圓錐狀的觸鬚,背上沒有刺及呈灰色或褐色,有一些深淺色的斑紋。它們可以長達2.4米。 扁鯊是夜間活動的,會將自己隱藏在沉積中埋伏獵物。它們主要吃底棲區的硬骨魚、鰩科及無脊椎動物。它們是無胎盤胎生的,雌鯊每隔一年會生7至25條幼鯊。它們並不怎麼帶有攻擊性,但若受到騷擾,則會很快的咬對方。扁鯊早至古希臘時就已經被漁獵作為食物,並被當作安康魚賣到歐洲。自20世紀中茱,頻繁的漁業令它們的數量大減,現已從北部滅絕。餘下的群落也因繁殖率低而面臨威脅。國際自然保護聯盟故此將它們列為極危。
via GBIF · IUCN
Squatina squatina, known as the common angelshark, is a species of shark in the family Squatinidae (known generally also as angel sharks), that were once widespread in the coastal waters of the northeastern Atlantic Ocean. Well-adapted for camouflaging itself on the sea floor, the angelshark has a flattened form with enlarged pectoral and pelvic fins, giving it a superficial resemblance to a ray. This species can be identified by its broad and stout body, conical barbels, thornless back (in larger individuals), and grayish or brownish dorsal coloration with a pattern of numerous small light and dark markings (that is more vivid in juveniles). It measures up to 2.4 m (7.9 ft) long.
Like other members of its family, the angelshark is a nocturnal ambush predator that buries itself in sediment and waits for passing prey, mostly benthic bony fishes, but also skates and invertebrates. An aplacental viviparous species, females bear litters of seven to 25 pups every other year. The angelshark normally poses little danger to humans, though if provoked, it is quick to bite. Since the mid-20th century, intense commercial fishing across the angelshark's range has decimated its population via bycatch – it is now locally extinct or nearly so across most of its northern range, and the prospects of the remaining fragmented subpopulations are made more precarious by its slow rate of reproduction. As a result, the International Union for Conservation of Nature has assessed this species as critically endangered.
via Wikidata · CC0
via Wikidata sitelinks · CC0
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).