Hello I am new to the site found it while trying to find out what is wrong with my Areo. I have a 20" silver and about 2 weeks ago she started to just sit at the bottom or top of the tank With out moving much. In the tank I have 2yellow tail barracudas about 10-11" and a royal knife about 12". the amonia level is between 0 and 0.2ppm the tank is a 180gallon all other fish seem fine. she will swim when I walk up to tank and her appetite is good one day the she does not eat the next. Not sure what is wrong any ideas
to MFK!