Wrasse are sexually dimorphic. Many species are capable of changing sex. Juveniles are a mix of males and females (known as initial-phase individuals), but the largest adults become territory-holding (terminal phase) males. The wrasses have become a primary study species in fish-feeding biomechanics due to their jaw njwx.info: Actinopterygii. The humphead wrasse (Cheilinus undulatus) is a species of wrasse mainly found on coral reefs in the Indo-Pacific region. It is also known as the Māori wrasse, Napoleon wrasse, Napoleon fish, Napoleonfish, so mei 蘇眉 (Cantonese), mameng (Filipino), and merer in Family: Labridae.
In fact, IP fish, both male and female, have undetectable levels of KT. As closely related they are to each other in terms aiding sex change in the bluehead wrasse, KT and AVT systems can act independently of each other. KT does not increase AVT mRNA expression nor is it necessary for the display of such expression. Wrasses. Wrasses are vibrantly colored and have a very playful disposition which makes them highly sought after as a centerpiece fish. They will adapt to most conditions and can be found on coral reefs or rock reefs. While they tend to be passive and friendly, wrasses will hide under the sand bed for protection if they are stressed or frightened.
Some wrasses, such as the tautog (Tautoga onitis) of the western Atlantic, are drab or dusky in colour, but many, such as the rainbow wrasse (Coris julis) of the Mediterranean, are brilliantly and often intricately coloured or patterned. Coloration within a species may be confusingly variable, depending on age and sex. The Wrasse within this category will not pick at nor consume corals or most invertebrates. They are some of the most colorful of the moderately-sized saltwater fish that can be incorporated into a reef aquarium. Many of these wrasse fish species are very active by nature and are nearly always swimming out in the open, adding activity and beauty.