ঘনাদার দুনিয়া

The story takes us to Mato Grosso, in Brazil. Ghanada’s friend, Belmanto, had bought a ranch in that area, and Ghanada was visiting him. Belmanto’s dream was to make his ranch the Numro Uno 1 in the whole world, where he would breed the best quality cattle and horses. After reaching the place, Ghanada had found his friend to be gravely distressed. Belmanto had then revealed that he was about to sell off the ranch, at a very low price and leave the area forever. It took Ghanada a while to understand what the matter was. Soon, he realized Belmanto was withdrawing because of the attack of swarms of mosquitoes. Immediately, Ghanada had found the solution, and had taken out his trousers from his travel bag. One of the trouser legs had a speck of mud on them, and that speck of mud did the trick. Before going to Mato Grosso, Ghanada had roamed around some flooded rivers, in Argentina. The strain of mud must have come from there, Ghanada guessed. That mud had the miniscule eggs of a specific kind of tiny fish, called Cynolebias belotti. Locally, it is known as the Pearlfish. Ghanada had sprinkled that dried mud powder in the dried-up canals and swamps near the ranch. During rainy season, the mud got wet, and within half an hour, several Pearlfish came out of the eggs. A single fish can destroy at least fifty mosquito larvae a day. At the age of three weeks, the female fish starts laying eggs. Each Pearlfish lays around three hundred eggs in a week. After the floodwater recedes, those eggs remain dormant, in the dried-up mud.

After this, Belmanto never had to worry about the mosquitoes, and now, he has the best ranch in the world.