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Arothron nigropunctatus is a small sized fish which grows up to 33 cm (1 ft) length. [2] Its body is oval shape, spherical and relatively elongated. The skin is not covered with scales. The fish has no pelvic fin and no lateral line. The dorsal fin and the anal fin are small, symmetric and located at the end of the body. Its snout is short with ...
Osteichthyes (/ ˌ ɒ s t iː ˈ ɪ k θ iː z / ost-ee-IK-theez; from Ancient Greek ὀστέον (ostéon) 'bone' and ἰχθύς (ikhthús) 'fish'), [2] also known as osteichthyans or commonly referred to as the bony fish, is a diverse superclass of vertebrate animals that have endoskeletons primarily composed of bone tissue.
The skull of Tiktaalik was low and flat, more similar in shape to that of a crocodile than most fish. The rear edge of the skull was excavated by a pair of indentations known as otic notches. These notches may have housed spiracles on the top of the head, which suggest the creature had primitive lungs as well as gills.
The endoskeleton of the fish is made up of two main components: the axial skeleton consisting of the skull and vertebral column, and the appendicular skeleton supporting the fins. [7] The fins are made up of bony fin rays and, except for the caudal fin, have no direct connection with the spine.
The black endostyle is visible below the oral siphon, as well as a mid-dorsal black line below the atrial siphon. [ 11 ] Clavelina ossipandae is also recognizable by the black markings on its white anterior portion (a central dot between the oral and atrial siphons, surrounded by two lateral bands), uniquely distinctive in the genus Clavelina .
He is standing at the center of the canvas proudly displays his catch, a large fish hanging at the end of a fishing rod. His black body reveals a white skeletal figure. The painting had previously been auctioned in 1988, a few months after Basquiat's death, and sold for $110,000. [ 2 ]
Dunkleosteus is an extinct genus of large arthrodire ("jointed-neck") fish that existed during the Late Devonian period, about 382–358 million years ago.It was a pelagic fish inhabiting open waters, and one of the first vertebrate apex predators of any ecosystem.
Chondrichthyes (/ k ɒ n ˈ d r ɪ k θ i iː z /; from Ancient Greek χόνδρος (khóndros) 'cartilage' and ἰχθύς (ikhthús) 'fish') is a class of jawed fish that contains the cartilaginous fish or chondrichthyans, which all have skeletons primarily composed of cartilage.