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Paracanthurus hepatus is a species of Indo-Pacific surgeonfish.A popular fish in marine aquaria, it is the only member of the genus Paracanthurus. [2] [3] A number of common names are attributed to the species, including regal tang, palette surgeonfish, blue tang (leading to confusion with the Atlantic species Acanthurus coeruleus), royal blue tang, hippo tang, blue hippo tang, flagtail ...
The pelvis is, in general, different between the human female and male skeleton. [14] [15] Although variations exist and there may be a degree of overlap between typically male or female traits, [14] [15] the pelvis is the most dimorphic bone of the human skeleton and is therefore likely to be accurate when using it to ascertain a person's sex ...
Blue tang have ventral spikes, which has the added benefit to the parrotfish of wielding away predators. The schools are typically composed of 50 to 400 blue tang with up to 17 midnight parrotfish, although a majority of schools include 1 or 2 parrotfish. Both blue tang and parrotfish compete with damselfish for algae, and the co-schooling ...
Pelvimetry is the measurement of the female pelvis. [1] It can theoretically identify cephalo-pelvic disproportion, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal. However, clinical evidence indicate that all pregnant women should be allowed a trial of labor regardless of pelvimetry results.
By eating the algae off of other fish, the blue tang serve as cleaners for them. [2] With the decline in the Diadema antillarum population, the blue tang population increased since the algal resources that the two animals usually competed for were more abundant. [8] Juvenile blue tangs eat continuously and feed heavily.
A subpubic angle of 50–82 degrees indicates a male; an angle of 90 degrees indicates a female. [2] Other sources operate with 50–60 degrees for males and 70–90 degrees in females. [1] Women have wider hips, and thus a greater subpubic angle, in order to allow for child birth.
The John Thomas sign, [1] also known as the Throckmorton sign, [2] is a slang or joke term used in the field of radiology. It refers to the position of a penis as it relates to pathology on an X-ray of a pelvis. When the penis (visible on the X-ray as a shadow) points towards the same side as a unilateral medical condition such as a broken bone ...
A female hip will have a pronounced ridge on this face while a male hip will have a broad flat surface. This criterion is the least distinct of those that Phenice describes, with the highest similarity in male and female examples. It should only be relied upon in conjunction with the other two features. [1]