Baliqlar ko'payish ekologiyasi bilan bog'liq bir-biridan qiziq holatlar mavjud. Shulardan biri Janubiy Amerika suv havzalarida keng tarqalgan xarasisimonlar turkumi vakili Copella arnoldi hisoblanadi.
Ular yosh avlodlarini suvdagi dushmanlardan muhofaza qilish maqsadida tuxumlarini suvdan tashqariga - daraxt barglariga qo'yadi. Bunda erkak va urg'ochi baliqlar suvdan sinxron tarzda sakrab suv yuzasidagi daraxt barglariga yopishib olishadi. Urg'ochi baliq tuxum qo'yadi va o'sha zahoti erkak baliq ularni urug'lantiradi. 3-5 soniyadan keyin har ikki baliq suvga tushadi. Keyinchalik erkak baliq tuxumlar qurib qolmasligi uchun ularga dumi bilan suv sepib turadi.
Ikki-uch kunda tuxumlardan mayda ikralar rivojlanadi va ular suvga tushib o'z rivojlanish hayotini davom ettiradi.
Baliqlar ko'payish ekologiyasi bilan bog'liq bir-biridan qiziq holatlar mavjud. Shulardan biri Janubiy Amerika suv havzalarida keng tarqalgan xarasisimonlar turkumi vakili Copella arnoldi hisoblanadi.
Ular yosh avlodlarini suvdagi dushmanlardan muhofaza qilish maqsadida tuxumlarini suvdan tashqariga - daraxt barglariga qo'yadi. Bunda erkak va urg'ochi baliqlar suvdan sinxron tarzda sakrab suv yuzasidagi daraxt barglariga yopishib olishadi. Urg'ochi baliq tuxum qo'yadi va o'sha zahoti erkak baliq ularni urug'lantiradi. 3-5 soniyadan keyin har ikki baliq suvga tushadi. Keyinchalik erkak baliq tuxumlar qurib qolmasligi uchun ularga dumi bilan suv sepib turadi.
Ikki-uch kunda tuxumlardan mayda ikralar rivojlanadi va ular suvga tushib o'z rivojlanish hayotini davom ettiradi.
The Singapore stock market has alternated between positive and negative finishes through the last five trading days since the end of the two-day winning streak in which it had added more than a dozen points or 0.4 percent. The Straits Times Index now sits just above the 3,060-point plateau and it's likely to see a narrow trading range on Monday.
The STAR Market, as is implied by the name, is heavily geared toward smaller innovative tech companies, in particular those engaged in strategically important fields, such as biopharmaceuticals, 5G technology, semiconductors, and new energy. The STAR Market currently has 340 listed securities. The STAR Market is seen as important for China’s high-tech and emerging industries, providing a space for smaller companies to raise capital in China. This is especially significant for technology companies that may be viewed with suspicion on overseas stock exchanges.
