http://www.scribd.com/doc/58894122/PFK-MAY11-INFOGRAPHIC
Your pacu will get the size of a man's torso, your clown knife will get to over three feet long, and your redtail will be pushing four. Your silver dollars are the only fish that are suited for your tank long-term, and your other fish won't be able to turn around.
Also, silver dollars are schooling fish. Yours are probably scared because they don't have enough of their own kind. Get rid of everything else, get more silver dollars, and start researching. http://www.seriouslyfish.com/ is a pretty good resource.
Your pacu will get the size of a man's torso, your clown knife will get to over three feet long, and your redtail will be pushing four. Your silver dollars are the only fish that are suited for your tank long-term, and your other fish won't be able to turn around.
Also, silver dollars are schooling fish. Yours are probably scared because they don't have enough of their own kind. Get rid of everything else, get more silver dollars, and start researching. http://www.seriouslyfish.com/ is a pretty good resource.