Originally posted by cprdnick
so, how does the LFS keep so many of them for weeks at a time without any dying
A lot of a LFS setup is never seen. Mosty all have very large filtration systems in the back rooms, only reason thier tanks always look really full. along with filtration, some may have liverock in back which has pods living in them. Some may also just not feed their mandarins. I dont think any fish store would admit to having their fish die. They'd probably tell you they sold it(to the porcelain god). Check out the stomach when you get one. You wil notice an unhealthy one because its stomach will be concaved in. Also, ive heard mandarins will eat live brine.
Also, how can you tell if you have copepods?
Copepods look like little bugs running around your rocks. bout a 1/8 inch in size. do a search on copepods, there are a couple of threads with some pics.