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Chimaera orientalis has several general characteristics, such as the presence of anal fin, tall first dorsal spine with short base, long interdorsal space, long pectoral fins, long pelvic claspers, and dark brown-colored body and darker fins with no distinctive patterns. [2] The only specimen ever caught has a maximum total length of 17.6 cm. [2]
There are two dorsal fins: a large triangular first dorsal fin and a low rectangular or depressed second dorsal fin. For defense, some chimaeras have a venomous spine on the front edge of the dorsal fin. [4] In many species, the bulbous snout is modified into an elongated sensory organ, capable of electroreception to find prey.
The anterior dorsal fin is tall and triangular, with a single venomous spine at the front of the fin. The posterior dorsal fin is very long and flat, and spans a large portion of the chimaera’s body, from the middle of the torso to the base of the tail. Silver chimaeras have long, whip-like tails, which have two symmetrical caudal fin lobes ...
Chimaera carophila differs from C. fulva, C. macrospina, and C. obscura by its geographic distribution, certain morphological characteristics, and coloration. Morphological differences include shorter pelvic claspers, a shorter first dorsal fin, dorsal fin spines are shorter, and a longer caudal dorsal margin and ventral margin.
The first dorsal fin includes a mildly venomous spine, used in defense. [ 4 ] Long-nosed chimaeras are found in temperate and tropical seas worldwide, from 200 to 2,000 m (660 to 6,560 ft) in depth. [ 4 ]
This chimaera species is distinguishable from its closest congener (Chimaera owstoni) from several characteristics: stockier body, robust head, slightly concaved dorsal spine, teardrop-shaped pectoral fin, square-shaped anal fin with pale gray distal margin, darkish ventral surface, and walnut brown-colored body with lighter spots. [2]
The top dorsal fin is positioned high on the spine of the fish, and is triangular and tall in height. Positioned in the mid-section of the fish, the spine runs throughout the length of the fish and continuously joins with the upper part of the caudal fin ; this dorsal spine is also mildly poisonous and can cause painful stings.
Chimaera compacta is a bathydemersal chimaera found in southern ... The species has a substantial head with a short snout, long stocky trunk, long pelvic fin, ...