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Aristotle (ca. 340 B.C.) may have been the first scientist to speculate on the use of hard parts of fishes to determine age, stating in Historica Animalium that “the age of a scaly fish may be told by the size and hardness of its scales.” [4] However, it was not until the development of the microscope that more detailed studies were performed on the structure of scales. [5]
The Australian government said the lungfish is the last from a family of fish that have been around since the age of dinosaurs. ... It is also a relatively heavy fish, weighing on average about 88 ...
The freshwater drum, Aplodinotus grunniens, is a fish endemic to North and Central America. ... the average age of a freshwater drum is between 6 and 13 years. [22]
Yelloweye rockfish live to be extremely old, even for their unusually long-lived genus. They average 114 [2] to 120 [3] years of age; the oldest ones reach as much as 147 years. They fade from bright orange to a paler yellow as they grow in age. They are exceptionally slow developing as well, not reaching maturity until they are around 20 years ...
According to wildlife officials, the fish was estimated to be between 50 and 70 years old; one report estimated the gar's age to be at least 95. [9] Williams donated it to the Mississippi Museum of Natural Science in Jackson, where it will remain on display. [10] [11]
Major groups of fish evolved during this period, often referred to as the age of fish. [39] See Category:Devonian fish. D e v o n i a n: Early Devonian: Early Devonian (419–393 Ma): Psarolepis: Psarolepis (speckled scale) is a genus of extinct lobe-finned fish that lived around 397 to 418 Ma.
They reach maturity at 4–5 years of age and the maximum age is believed to be at least 9 years. [6] The oldest swordfish found in a recent study were a 16-year-old female and 12-year-old male. Swordfish ages are derived, with difficulty, from annual rings on fin rays rather than otoliths, since their otoliths are small in size. [12]
The Devonian period (419–359 Mya), also known as the Age of Fishes, saw the development of early sharks, armoured placoderms and various lobe-finned fish, including the tetrapod transitional species. The evolution of fish began about 530 million years ago during the Cambrian explosion.