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Anemonefish are the best known example of fish that are able to live among the venomous sea anemone tentacles, but several others occur, including juvenile threespot dascyllus, certain cardinalfish (such as Banggai cardinalfish), incognito (or anemone) goby, and juvenile painted greenling.
A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians.
The lookdown is silvery on both sides with a darker tinge on top. A young fish has several faint vertical bars that fade as it grows. [3] The longest lookdown known was 48.3 cm (19.0 in) long, [5] and the heaviest weighed 2.1 kilograms (4.6 lb). [6]
Fish account for more than half of vertebrate species. As of 2016, there are over 32,000 described species of bony fish, over 1,100 species of cartilaginous fish, and over 100 hagfish and lampreys. A third of these fall within the nine largest families; from largest to smallest, these are Cyprinidae , Gobiidae , Cichlidae , Characidae ...
According to the International Game Fish Association, the current all-tackle world records are: [30] [31] Black crappie: 2.47 kg (5 lb 7 oz), caught by Lionel "Jam" Ferguson at Richeison Pond in Tennessee on 15 May 2018 [32] White crappie: 2.35 kg (5 lb 3 oz), caught by Fred Brigh at Enid Dam, Mississippi on 31 July 1957 [32]
Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.
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