Parrotfish Blue

Parrotfish

Parrotfish are a clade of fish placed in the subfamily Scarinae of the wrasse family (Labridae). Historically considered as the family Scaridae, genetic studies found them to be deeply nested within the wrasses, and they are now treated as a subfamily. With roughly 95 species, the group's largest species richness is in the Indo-Pacific. They are herbivores or corallivores inhabiting coral reefs, rocky coasts, and seagrass beds, and can play a significant role in bioerosion as some species eat away at the corals. This activity often contributes to enriching the sand content on the surrounding ocean floor.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

parrotfish

Noun

1. Any of several tropical marine fish of the family Scaridae known for their beak-like mass of teeth used to scrape algae from rocks or coral.

blue

Adjective

1. Of a blue hue.
2. Depressed, melancholic, sad.

Noun

1. The colour of the clear sky or the deep sea; the colour midway between green and violet in the visible spectrum and one of the primary additive colours.
2. Anything coloured blue, especially to distinguish it from similar objects differing only in colour.