lazy

I have a 30 gallon growout tank with a randown assortment of young fish. 5 black calvus 2-2.5", 10 A. kandeense 2.5", and 6 L. Ocellatus ~2". Apparently the calvus have an appetite. I knew calvus were predators, but thought they were more likely to prey on fry/small fish. Long story short...

Saw this while watching CNN today... Such a great idea... <object width="960" height="745"><param name="movie" value="http://www.youtube.com/v/3tNVOhtvPEw&hl=en_US&fs=1&color1=0xe1600f&color2=0xfebd01"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess"...

Ok.. I'm being really lazy and don't want to look it up.... How do you sex discus?