Portal:Fish/Did you know/Archive/Nomination

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This is the archives for "Did you know..." section in the fish portal.

'"Did you know..."'

December 2006

  • ...that tuna and some species of sharks are warm-blooded, and able to raise their body temperature significantly above that of the ambient water surrounding them?

  • Ichthus.svg
    ...that Ichthys is a symbol resembling a fish, used by early Christians as a secret symbol and is now known colloquially as the "Jesus fish." Ichthus (ΙΧΘΥΣ, Greek for fish) is an acronym to "Jesus Christ God's Son is Saviour"?


January 2007




February 2007



  • Sharks Lateral Line.svg
    ...that the lateral line, a faint line running lengthwise down each side of the body of a fish, is a sense organ used to detect movement and vibration in the surrounding water?

March 2007


  • Spearfish remora.jpg
    ... that remoras have been used for catching sea turtles: when a turtle is sighted the remora with rope attached to its tail is released from the boat; it usually heads directly for the turtle and fastens itself to the turtle's shell, and then both remora and turtle are hauled in?


  • Common carp.jpg
    ...that carp was the subject of the first text on aquaculture, Fan Lee's "Treatise on Pisciculture," written in 473 BCE.?

April 2007

  • Ameiurus nebulosus.jpg
    ...that the brown bullhead catfish (Ameiurus nebulosus) is important as a clan symbol of the Ojibwe group of Native Americans? In their tradition the bullhead came out of the sea to form the original clans.


  • Periophthalmus gracilis.jpg
    ...that the mudskippers, goby fishes of the subfamily Oxudercinae, are quite active when out of water, feeding and interacting with one another, as well as defending their territories?


May 2007

  • Common carp.jpg
    ...that a popular Chinese lyric circulating two thousand years ago relates how a man far away from home sent back to his wife a pair of carps, in which when the wife opened the fish to cook was found a silk strip that carried a love note?

  • ...that there are two forms of rainbow trout; the freshwater form and the "steelhead" form which spend 1 to 2 years maturing in salt water then return to fresh water to reproduce?

  • Icefishuk.jpg
    ...that blood of icefishes is transparent because they have no hemoglobin and/or only defunct erythrocytes. Their metabolism relies only on the oxygen dissolved in the liquid blood, which is believed to be absorbed directly through the skin from the water?


June 2007

  • Osteoglossum bicirrhosum.JPG
    ...that in the boxing manga and anime Fighting Spirit, the character Tatsuya Kimura keeps an arowana as a pet? The fish's jumping behavior inspires him to develop a new boxing technique.

  • Betta splendens pale.jpg
    ...that the Siamese fighting fish (Betta splendens) is the Betta species most commonly known to aquarium hobbyists, it is often but imprecisely sold simply as "betta" (as a common name). The name "betta" can, however, also refer to any of the nearly 50 other members of the genus


  • Chinook salmon.jpg
    ...that the Chinook salmon, depending on the timing of adult entry into fresh water, are typically divided into "spring chinook", "summer chinook", and "fall chinook"?

  • Opsanus beta 1.jpg
    ...that the male toadfish, trying to attract females, "sing" so loudly that they have disrupted people on houseboats?

July 2007


  • ChromisNiloticus.jpg
    ...that in the 'loaves and fishes' Bible story, tilapia is the fish Jesus is purported to have multiplied to feed 5000?

  • Beaver pho34.jpg
    ...that in the 17th century, the Roman Catholic Church ruled that the beaver was a fish for purposes of dietary law? Therefore, the general prohibition on the consumption of meat on Fridays during Lent does not apply to beaver meat.

August 2007

  • Pterapogon kauderni1.JPG
    ...that the Banggai cardinal (Pterapogon kauderni) was recently denied protection under CITES because the fish can be captive-bred and "it appears that a listing in Appendix II is not necessary and, on the contrary, could be counterproductive as favouring illegal activities"?

  • ...that the Alaska blackfish (Dallia pectoralis) is able to safely weather water temperatures at 0C for extended periods, and in lab tests has been able to survive being super-cooled to temperatures as cold as -20C so long as it is kept free of ice crystals?


December 2007

  • Sillago parvisquamis.jpg
    ...that studies of the inshore marine fish small-scale whiting (Sillago parvisquamis, ) suggest the female starts life smaller than the male, but grows faster and is larger than the male within two years?

March 2009

  • Liposarcus multiradiatus 01 ssj 20050321.jpg
    ...that the Loricariidae or the suckermouth catfish from Central and South America is the largest family of catfish, with almost 700 species and new species being described each year?


  • ...that the yoyo loach (Botia almorhae) from India and Pakistan is named for their black and white patterns, which often can be seen to spell "yoyo" especially in younger specimens?