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.
Cooler Temperatures. I use cooler temperatures to slow the growth and aging process of fish when they are approximately 3 to 4 months of age. Generally I will keep these fish at a temperature of 72 to 74 degrees.This has no ill effect on the fish and greatly reduces their metabolism. I have had guppies live to be two years of age at these temperatures and I think anyone would agree that that's a pretty long life for a guppy.Warmer Temperatures. For the first 30 days I keep my fry tanks at 84 to 86 degrees. have had guppies live to be two years of age at these temperatures and I think anyone would agree that that's a pretty long life for a guppy. Warmer Temperatures. For the first 30 days I keep my fry tanks at 84 to 86 degrees.