1944 - Universal adult suffrage introduced; new constitution providing for a popularly-elected House of Representatives promulgated. 1958 - Jamaica becomes a member of the British-sponsored Federation of the West Indies. 1961 - Jamaica withdraws from the Federation of the West Indies.
Guppies prefer a hard water aquarium with a temperature between 25.5Â° and 27.8 Â°C and salt levels equivalent to one tablespoon per 19 litres.In fact, they can withstand levels of salinity up to 150% that of normal seawater.uppies prefer a hard water aquarium with a temperature between 25.5Â° and 27.8 Â°C and salt levels equivalent to one tablespoon per 19 litres.
Aquarium Water Temperature. For the vast majority of tropical fish, an aquarium water temperature of 76 to 78Âº Fahrenheit will be fine.Some species like cooler water and some prefer warmer water, but as a compromise, this range works well.quarium Water Temperature. For the vast majority of tropical fish, an aquarium water temperature of 76 to 78Âº Fahrenheit will be fine.