Covariance measures the linear relationship between two variables. The covariance is similar to the correlation between two variables, however, they differ in the following ways: Correlation coefficients are standardized. Thus, a perfect linear relationship results in a coefficient of 1. The correlation measures both the strength and direction of the linear relationship between two variables.
The Largest True Goldfish Ever Caught. The largest true goldfish on record was measured at 5lbs (2.27 kilograms) and was caught by a 16 year old schoolboy in the UK. This blown-up goldfish was evidently a pet before it ended up into a lake.
Genus. Mola. Not only is the sunfish (Mola mola) the worldâs heaviest bony fish, with some individuals weighing in at a staggering 2.3 tonnes, but it also possesses a truly bizarre body shape, likened to a gigantic âswimming headâ .The sunfish has no tail, with the caudal fin reduced to a rudder-like structure, called the clavus.ot only is the sunfish (Mola mola) the worldâs heaviest bony fish, with some individuals weighing in at a staggering 2.3 tonnes, but it also possesses a truly bizarre body shape, likened to a gigantic âswimming headâ .