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Czech-born writer Milan Kundera in his 2015 book The Festival of Insignificance conveys about the eroticism of exposed female navels. [ 52 ] [ 53 ] [ 54 ] Alain, one of the characters in the book, observes to his friend how most of the young women in Paris wear T-shirts or blouses that expose their midriffs , displaying their navels for all to see.
There is evidence that the genetic basis for aggression in betta fish is not exclusively sex-linked – a 2019 study found that female bettas of the fighting strain show significantly higher levels of aggression than their female wild-type counterparts, despite the fact that historically only male bettas have been used in fights and thus ...
The belly button is unique to each individual due to it being a scar, and various general forms have been classified by medical practitioners. [ 6 ] [ 7 ] [ further explanation needed ] Outie : A navel consisting of the umbilical tip protruding past the periumbilical skin is an outie.
A betta fish's lifespan can be impacted by the care it receives, WebMD reports. Bettas may live longer if their tank is clean, the environment is calm and their diet is healthy.
When a female dies a juvenile (male) anemone fish moves in, and "the resident male then turns into a female and reproductive advantages of the large female–small male combination continue". [22] In other fishes sex changes are reversible. For example, if some gobies are grouped by sex (male or female), some will switch sex. [14]: 164 [21]
Albino paradise fish. Paradise fish are fairly combative, harassing and attacking each other, as well as potentially assaulting and killing small fish. During a fight, the paradise fish will often change its color, usually displaying dark blue lateral lines on the sides of their bodies; extend its fins; and spread out its operculum. [5]
The peaceful betta or crescent betta (Betta imbellis) is a species of gourami native to Southeast Asia.. Betta imbellis has a pair of suprabranchial chambers that each house a labyrinth organ, a complex bony structure lined with thin, highly vascularised respiratory epithelium.
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