Are Black Skirt Tetras Schooling Fish?

Are Black Skirt Tetras Schooling Fish? Hardy and easy to care for, the black widow tetra (or black skirt tetra) is a schooling fish that, contrary to its name, comes in several colors. Are black skirt tetras territorial? Natural Habitat and Behavior Despite this, they are generally territorial and somewhat aggressive and will drive off

Did Alexey Pajitnov Make Money From Tetris?

Did Alexey Pajitnov Make Money From Tetris? Because he was employed by the Soviet government, Pajitnov did not receive royalties. Pajitnov, together with Vladimir Pokhilko, moved to the United States in 1991 and later, in 1996, founded The Tetris Company with Henk Rogers, which finally allowed him to collect royalties from his game. Is the