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The olm (German: ⓘ) or proteus (Proteus anguinus) is an aquatic salamander which is the only species in the genus Proteus of the family Proteidae [2] and the only exclusively cave-dwelling chordate species found in Europe; the family's other extant genus is Necturus.
The guppy (Poecilia reticulata), also known as millionfish or the rainbow fish, [3] is one of the world's most widely distributed tropical fish and one of the most popular freshwater aquarium fish species. It is a member of the family Poeciliidae and, like almost all American members of the family, is live-bearing. [4]
The zebrafish can reach up to 4–5 cm (1.6–2.0 in) in length, [16] although they typically are 1.8–3.7 cm (0.7–1.5 in) in the wild with some variations depending on location. [citation needed] Its lifespan in captivity is around two to three years, although in ideal conditions, this may be extended to over five years.
Standard weight equation for largemouth bass [1] and burbot [2] (fish). Standard weight in fish is the typical or expected weight at a given total length for a specific species of fish. Most standard weight equations are for freshwater fish species. Weight-length curves are developed by weighing and measuring samples of fish from the population.
Visible on its snout are tiny pores which lead to electroreceptor cells. Chimaeras are soft-bodied, shark-like fish with bulky heads and long, tapered tails; measured from the tail, they can grow up to 150 cm (4.9 ft) in length. Like other members of the class Chondrichthyes, chimaera skeletons are entirely cartilaginous, or composed of cartilage.
Depending on the species, adult ctenophores range from a few millimeters to 1.5 m (5 ft) in size. 186 living species are recognised. [7] Their bodies consist of a mass of jelly, with a layer two cells thick on the outside, and another lining the internal cavity.
Every now and then, photos of weird wildlife surface on the internet and cause absolute chaos on social media.In June, the Twitterverse went wild when an old photo of a human-sized bat in the ...
The number of cells in these groups vary with species; it has been estimated that the human body contains around 37 trillion (3.72×10 13) cells, [7] and more recent studies put this number at around 30 trillion (~36 trillion cells in the male, ~28 trillion in the female).