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The bowfin (Amia calva) is a ray-finned fish native to North America. Common names include mudfish, mud pike, dogfish, grindle, grinnel, swamp trout, and choupique.It is regarded as a relict, being one of only two surviving species of the Halecomorphi, a group of fish that first appeared during the Early Triassic, around 250 million years ago.
The head of the bowhead whale comprises a large portion of its body length, creating an enormous feeding apparatus. [21] The bowhead whale is a filter feeder, and feeds by swimming forward with its mouth wide open. [19] It has hundreds of overlapping baleen plates consisting of keratin hanging from each side of the upper jaw. The mouth has a ...
The belly is off-white or cream, and the fish has no scales. [5] Additionally, there are darker, brown-black speckles along the entire surface of the fish. The brown bullhead has a dorsal fin that bears a spine, [6] a single adipose fin posterior to the dorsal fin, abdominal pelvic fins, and an anal fin with 21 to 24 rays. The tail is only ...
As whales grow, mercury accumulates in the liver, kidney, muscle, and blubber, and cadmium settles in the blubber, [18] the same process that makes mercury in fish a health issue for humans. Whale meat also bioaccumulates carcinogens such as PCBs , chemical compounds that damage human nervous , immune and reproductive systems , [ 19 ] [ 20 ...
Balaena is a genus of cetacean (whale) in the family Balaenidae. Balaena is considered a monotypic genus, as it has only a single extant species, the bowhead whale (B. mysticetus).
Rhina ancylostoma is a heavily built fish growing to 2.7 m (8.9 ft) long and 135 kg (298 lb) in weight. [3] [7] The head is short, wide, and flattened with an evenly rounded snout; the front portion of the head, including the medium-sized eyes and large spiracles, is clearly distinct from the body. The long nostrils are transversely oriented ...
The story of Jonah being swallowed by a great fish is told both in the Qur'an [133] and in the biblical Book of Jonah (and is mentioned by Jesus in the New Testament: Matthew 12:40. [134]). This episode was frequently depicted in medieval art (for example, on a 12th-century column capital at the abbey church of Mozac , France).
Lunge-feeders feed primarily on euphausiids (krill), though some lunge feeders also prey on schools of fish. [89] Skim-feeders, like bowhead whales, feed upon primarily smaller plankton such as copepods. [90] They feed alone or in small groups. [91] Baleen whales get the water they need from their food, and their kidneys excrete excess salt. [70]