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Billfish have a long, bony, spear-shaped bill, sometimes called a snout, beak or rostrum. The swordfish has the longest bill, about one-third its body length. Like a true sword, it is smooth, flat, pointed and sharp. The bills of other billfish are shorter and rounder, more like spears. [40] Billfish normally use their bills to slash at ...
The species name, Xiphias gladius, derives from Greek ξιφίας (xiphias, "swordfish"), itself from ξίφος (xiphos, "sword") and from Latin gladius ("sword"). [6] This makes it superficially similar to other billfish such as marlin , but upon examination, their physiology is quite different and they are members of different families.
These are the only two fish that have a long blade-like snout. [35] Although they are similar in appearances, saw sharks are distinct from sawfish. Sawfish are not sharks, but a type of ray. The gill slits of the sawfishes are positioned on the underside like a ray, but the gill slits of the saw shark are positioned on the side like a shark.
Like the sticklebacks, it feeds on small invertebrates and fish larvae. [6] Also, like sticklebacks, it produces a sticky secretion from its kidneys when breeding. Whereas sticklebacks use this secretion to bind plant matter together to create a nest, the tube-snout simply attaches its eggs to a substrate. Aulorhynchus attaches its eggs to kelp ...
The other is the Chinese paddlefish (Psephurus gladius), which was declared extinct in 2022 following a 2019 recommendation; [6] [7] [8] the species has not been sighted in the Yangtze River Basin in China since 2003. [9] [10] Chinese paddlefish are also commonly referred to as "Chinese swordfish", or "elephant fish". [11]
Marlins have elongated bodies, a spear-like snout or bill, and a long, rigid dorsal fin which extends forward to form a crest. Marlins are among the fastest marine swimmers. However, greatly exaggerated speeds are often claimed in popular literature, based on unreliable or outdated reports.
[3]: 124 The Chinese character for fish is yu (traditional Chinese: 魚; simplified Chinese: 鱼; pinyin: yú). It is pronounced with a different tone in modern Chinese, 裕 (yù) means "abundance". Alternatively, 餘, meaning "over, more than", is a true homophone, so the common Chinese New Year greeting appears as 年年有魚 or 年年有餘.
Siniperca chuatsi is both a popular game fish among anglers and a commercially important species in China, as it is a popular food fish and has been widely farmed in its native range since the 20th century. It first gained major popularity during the Tang dynasty (618–907 CE), appearing in many Chinese books and poems. [3]