It resembles an onion and is a steamy water snail. The shell is covered with yellow and black spots. The lines on the body are very rich, ranging from jagged stripes to spots. It can also survive well in fresh water. Onion snails are highly adaptable in fresh water, belong to snails with strong vitality, and can survive in poor water quality environments. Suitable for PH7.1 ~ 7.4 hard water, like hard water, soft water is easy to dissolve the shell, the beautiful stripes outside the shell are dissolved, will reduce the ornamental value. At water temperatures of 22 to 30 degrees, zebra snails are most suitable for growth and are most active.
Onion snails
Introduction to onion snails
Onion snail, scientifically known as Red Spotted Nerite Snail, English as Onion Snail, and Latin as Rapa rapa, was named by Linnaeus in 1758. Onion snails belong to the animal kingdom, mollusk phylum, gastropods, neogastropods, and coral snails. Onion snails prefer omnivorous, but do not eat grass, the size is between 1 and 3 cm, and the lifespan is about 1.5 to 2 years. Onion snails spawn in fresh water, but cannot reproduce. Distribution area: Western Pacific Ocean. It is found mainly in tropical and subtropical warm waters, usually inhabiting coral reefs and deeper seas. World distribution Indonesia Brazil. Taiwan Distribution Hualien Coast, Hengchun Peninsula in Pingtung County, Dashufang, Taiping Island in Nansha, Mosquito Pit in Gongliao Township, Taipei County, Kaohsiung.
Like most snails, they are named because they resemble something, and onion snails are named "onion snails" because of their appearance. The top of the shell of the onion snail is relatively flat, and most of it is not in the body layer. The snail body is purple-red, similar in color to an onion. The black spots are dotted with regularities, and it is also a very beautiful snail. The shell of the onion snail is relatively thin and easy to break. The spiral tower is shorter, the screw shaft is generally straighter and very smooth, and the lower half of the shaft shield expands outwards, forming a thin sheet that is relatively separate from the entire body layer. The front pipe ditches are relatively open, some are very straight, and some are curved at great angles. Viewed from the top of the shell of the onion snail, it can be seen that the grooves are all thin longitudinal ridges, and the grooves on the upper part of the body layer are densely packed with more longitudinal ridges, and there are not many folds. The shell is either uniformly white or brownish or light yellow.
Onion snail culture
Onion snails belong to the steam water snail, soda is a certain salinity of the river-sea junction of the water, most of the steam water snails can survive well in the freshwater field, but often can not reproduce in the freshwater field. Some people on the Internet say that they have bred onion snails in their tanks, but this is often not a young onion snail, but some other snails are mixed in, and when they grow up, they will find that they are not onion snails. Onion snail prefers water quality with higher hardness, and is prone to shell dissolution in softer water quality, so that the stripes of its shell are decomposed by acid dissolution, reducing the value of the ornamental snail. The requirements for the PH value of water quality are about 7.5 to 8, the hardness is about 5 to 15 dkh, and the requirements for water temperature are about 15 to 38 °C.
Onion snail is an omnivorous food, like to eat the grass tank on the wall attached to the algae, algae, bottom slag are its grain, usually can be fed sinking bottom type of feed (fish and shrimp snail food can be). The onion snail can be placed in the cylinder as a cleaner, which is ornamental and maintains the cleanliness of the cylinder. Generally, 2 onion snails are placed in the cylinder of 60, 3 are placed in the cylinder of 90, and 4 are more suitable for 120 cylinders. Onion snails can be raised with most fish and shrimp, but be sure to exclude killer snails and some snail-eating fish.