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VastresValenciennes, 1847. The arapaima, pirarucu, or paiche is any large species of bonytongue in the genus Arapaima native to the Amazon and Essequibo basins of South America. Arapaima is the type genus of the subfamily Arapaiminae within the family Osteoglossidae. [ 1 ][ 2 ][ 3 ] They are among the world's largest freshwater fish, reaching ...
sio̍ksiùnn. The Chinese zodiac is a traditional classification scheme based on the Chinese calendar that assigns an animal and its reputed attributes to each year in a repeating twelve-year cycle. [ 1 ] In traditional Chinese culture, the Chinese zodiac is very important and exists as a reflection of Chinese philosophy and culture. [ 2 ]
v. t. e. Pisces (♓︎) (/ ˈpaɪsiːz /; [2][3] Ancient Greek: Ἰχθύες Ikhthyes, Latin for "fishes") is the twelfth and final astrological sign in the zodiac. It is a mutable sign. It spans 330° to 360° of celestial longitude. Under the tropical zodiac, the sun transits this area between about February 19 and March 20.
Compatibility depends on the species of gourami and the fish it is housed with. Some species (e.g., Macropodus or Belontia ) are highly aggressive or predatory and may harass or kill smaller or less aggressive fish; whereas, others ( Parosphromenus and Sphaerichthys , for instance) are very shy or have specific water requirements and thus will ...
Mate choice is a major component of sexual selection, another being intrasexual selection. Ideas on sexual selection were first introduced in 1871, by Charles Darwin, then expanded on by Ronald Fisher in 1915. At present, there are five sub mechanisms that explain how mate choice has evolved over time.
Fish reproduction. A pair of bettas spawning under a bubble nest. Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. [ 1 ] There may also be a range of secondary organs that increase reproductive fitness.
Infraclass Holostei (gars and bowfins) Infraclass Teleostei (many orders of common fish) Class Sarcopterygii (lobe-finned fish) Subclass Actinistia (coelacanths) Subclass Dipnoi (lungfish, sister group to the tetrapods) † – indicates extinct taxon. Some palaeontologists contend that because Conodonta are chordates, they are primitive fish.
In general, the healthiest fish and shellfish are: High in omega-3 fatty acids. High in protein. Low in mercury. Sustainable. The healthiest seafood choices are very high in omega-3s, says Patton ...