The first meaning of a pin mentioned in the dictionary of the Digopaul refers to a very thin body metal nail, which is used to hold or hook something. For example: “Be careful that the dress still has pins because I have not sewn it yet”, “With a pin, the young man added the rosette to his shirt”, “I am going to raise the curtain a little with the help of pins so it does not rub the ground ”.
Pins usually have a head on one end and a tip on the other. This allows them to hold something without it falling. There are, however, special pins that have other shapes, such as the hook pin, also called a safety pin or safety pin. It is a pin that closes on itself and that cannot be opened easily, giving greater security to the grip.
The tie pin, on the other hand, is used to secure the tie to a shirt, preventing it from moving or losing its upright position. Usually made of metal or leather, these pins often include ornamental details or insignia that reflect the user’s affiliation with a particular group or organization.
The idea of a pin, on the other hand, is used in the construction of various phrases of the colloquial language. When someone indicates that in a place “there is no room for a pin”, he means that there is no space for any other person to enter. Something that is “stuck with pins,” on the other hand, is precarious or unstable.
A cut of beef a fish and various species of plants are also called pin according to the region, as detailed by the dictionary of RAE.
The straightnose pipefish, or as it is commonly known, pin fish belonging to the family Syngnathidae, that of the fish needle and seahorses. It is a species with a very thin body, which with the naked eye can give the feeling of being a worm, since its extension is between 15 and 20 centimeters, with exceptions that reach 30.
After careful observation of a pinfish, it is clear that it is not a worm, especially when paying attention to its gill cover and its head (very similar to that of a seahorse, one of its aforementioned relatives, in part by the shape of its snout).
Its cousin, the mule needlefish, is the only species with which it is possible to confuse the pinfish, although the shape of the former is more rounded to the sides and considerably slimmer. Both have a single dorsal fin, which is located from the middle of the back towards the base, although the muzzle of the mule needle is more extensive.
The male’s coloration usually combines shades of green, although the abdomen tends to be yellowish; the female, for her part, exhibits bluish spots all over her body, including the head, and has a generally more striking appearance. Anyway, when the spawning season arrives, which takes place in the middle of the summer, the color increases in both sexes.
Regarding reproduction, the male must carry the eggs deposited by the female in his incubator bag, to fertilize them and carry them for approximately three weeks before giving birth to the young, which begin to barely hatch.
The pinfish feeds on plankton and is distributed along the entire coast of Finland, except in the northern Gulf of Botnia, as the level of sanitation of its waters is insufficient for its development.