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  2. Oscar (fish) - Wikipedia

    en.wikipedia.org/wiki/Oscar_(fish)

    Astronotus ocellatus. (Agassiz, 1831) The oscar (Astronotus ocellatus) is a species of fish from the cichlid family known under a variety of common names, including tiger oscar, velvet cichlid, and marble cichlid. [2] In tropical South America, where the species naturally resides, A. ocellatus specimens are often found for sale as a food fish ...

  3. Age determination in fish - Wikipedia

    en.wikipedia.org/wiki/Age_determination_in_fish

    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]

  4. Giant grouper - Wikipedia

    en.wikipedia.org/wiki/Giant_grouper

    The giant grouper is a species of shallow water and can be found at depths of 1 to 100 metres (3.3 to 328.1 ft). It is associated with reefs and is the largest known bony fish found on reefs. [1] Large specimens have been caught from shore and in harbours. [3] They are found in caves and in wrecks while the secretive juveniles occur in reefs ...

  5. List of largest fish - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_fish

    The largest fish of the now-extinct class Placodermi was the giant predatory Dunkleosteus. The largest and most well known species was D. terrelli, which grew almost 9 m (29.5 ft) in length [21] and 4 t (4.4 short tons) [22] in weight. Its filter feeding relative, Titanichthys, may have rivaled it in size. [23]

  6. Atlantic goliath grouper - Wikipedia

    en.wikipedia.org/wiki/Atlantic_goliath_grouper

    The Atlantic goliath grouper was historically referred to as the "jewfish". The name's origin is unclear. A 1996 review of the term's history from its first recorded usage in 1697 concluded that the species' physical characteristics were frequently connected to "mainstay caricatures of anti-Semitic beliefs", whereas the interpretation that the fish was regarded as kosher food had little ...

  7. List of freshwater aquarium fish species - Wikipedia

    en.wikipedia.org/wiki/List_of_freshwater...

    Oscar: Astronotus ocellatus: 45 cm (18 in) Many people that purchase these fish do not realize that the fish could grow to a foot long (30 cm) within a year. Due to their fast growth rate and large size as an adult, they are often kept in aquariums that are too small for them. [45] 72-80 °F (22-27 °C) [45] 6.0-7.5 [45] Butterfly peacock bass

  8. Timeline of fish evolution - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_fish_evolution

    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.

  9. Diversity of fish - Wikipedia

    en.wikipedia.org/wiki/Diversity_of_fish

    The wahoo is perhaps the fastest fish for its size, attaining a speed of 19 lengths per second, reaching 78 kilometres per hour (48 mph). Flying fish Their glides are typically around 50 meters (160 ft), but they can use updrafts at the leading edge of waves to cover distances of at least 400 meters (1,300 ft). [ 114 ]

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