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The queen coris can be a threat to smaller fish, and it is a very effective invertebrate hunter. In aquariums, it has a habit of rearranging sand and rocks, and it tends to dig itself down in sandy substrate. [6] The digging may serve various purposes. This includes breeding, as the fish may lay eggs under sand for protection.
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]
[1] [2] In terms of importance, the masculine gender is the default or unmarked, while the feminine gender is marked or distinct. [2] Many gender-related features are common across Romance languages. However, Spanish differs from other Romance languages, like French and Italian, in its kinship terms.
Some Spanish-speaking people advocate for the use of the pronouns elle (singular) and elles (plural). [14] Spanish often uses -a and -o for gender agreement in adjectives corresponding with feminine and masculine nouns, respectively; in order to agree with a gender neutral or non-binary noun, it is suggested to use the suffix -e.
Thalassoma bifasciatum forages for zooplankton, mollusks, small crustaceans (such as shrimp and krill), worms, other motile invertebrates, and the eggs of smaller fish, [4] as well as ectoparasites [4] on other fish. Initial phase males eat primarily zooplankton from currents, and females and initial phase males have certain hunting times ...
Gonochorism has evolved independently multiple times. [8] It is very evolutionarily stable in animals. [9] Its stability and advantages have received little attention. [10]: 46 Gonochorism owes its origin to the evolution of anisogamy, [11] but it is unclear if the evolution of anisogamy first led to hermaphroditism or gonochorism.
Several studies have found that small male fish will look and behave like the female of their species in order to gain access to female territory and copulate with them. [5] [6] In the fish family Blenniidae, the female Salaria pavo will show a specific colour pattern and movement when they want to approach a male and copulate with him. The ...
Parachromis managuensis is a large species of cichlid native to freshwater habitats in Central America, where it is found from Honduras to Costa Rica. [2] The binomial name refers to Lake Managua in Nicaragua, from which the holotype was obtained. [3]