The orange-lined triggerfish (Balistapus undulatus) is a species of marine ray-finned fish belonging to the triggerfish family, Balistidae. It has a wide Indo-Pacific range, and is typically found in coral reefs, coral lagoons, and external reef slopes. The orange-lined triggerfish has a dark brown to dark green body with orange lines that start behind the head and cover the rest of its body. Its maximum body size is about 30 centimetres (12 inches), with the head about one-third of the body length. Due to its broad diet and distribution, the species is a crucial component in coral reef ecosystems through top-down control, and especially through consumption of sea urchins. This orange-lined triggerfish was photographed in the Red Sea off the Egyptian coast.Photograph credit: Diego Delso
There is good advice at notability guideline for books page for writing new articles about books, as well as updating existing book articles. A book is notable, and generally merits an article, if it verifiably meets through reliable sources, one or more of the following criteria:
The book has been the subject of two or more non-trivial published works appearing in sources that are independent of the book itself.
The book has won a major literary award.
The book has been considered by reliable sources to have made a significant contribution to a notable or significant motion picture, or other art form, or event or political or religious movement.
The book is, or has been, the subject of instruction at two or more schools, colleges, universities or post-graduate programs in any particular country.
The book's author is so historically significant that any of the author's written works may be considered notable.
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