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The stoplight parrotfish is a protogynous hermaphrodite that shows full sexual dichromatism, meaning that it changes its sex from female to male during its lifespan, and its color changes with its sex change. [4] The sex change is most likely due to the control of hormones, in particular, 11-ketetestosterone (11-KT). [5] The timing of the sex ...
As in other parrotfish species, males are territorial. They are born female in a female-dominated civilization and can only change their gender as they mature, usually as they get older. This shift is a result of social and environmental factors. When there isn't a male in the group, activation takes place.
The common name of "Amazon molly," acknowledges this trait as a reference to the Amazon warriors, a female-run society in Greek mythology. [4] The Amazon molly is a hybrid species, and its parent species are the sailfin molly ( Poecilia latipinna ) and the Atlantic molly ( Poecilia mexicana ). [ 5 ]
In fish, reproductive histories often include the sex-change from female to male where there is a strong connection between growth, the sex of an individual, and the mating system within which it operates. [55] In protogynous mating systems where males dominate mating with many females, size plays a significant role in male reproductive success ...
The size at sexual maturity is only confidently known for the female of the species, being around 600 mm in fork length, [25] although the male has been estimated to reach maturity between 600 and 650 mm. [28] In the Atlantic, the species is known to spawn from spring through to early autumn, [29] although fish living in waters greater than 27 ...
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The kokanee salmon (Oncorhynchus nerka), also known as the kokanee trout, little redfish, silver trout, kikanning, Kennerly's salmon, Kennerly's trout, or Walla, [2] is the non-anadromous form of the sockeye salmon (meaning that they do not migrate to the sea, instead living out their entire lives in freshwater).
Goldfish has just announced that it's embracing its more mature, sophisticated side with a fitting new name. As of today, Goldfish will now be known as Chilean Sea Bass crackers.