Originally Posted by psyparrot
In my lfs the mandirin sit in about 2 gallon tanks with no lr and they seem fine. Are they actually starving?
Yes, they are starving. It can take 3 to 6 months for them to starve to death. So even when you see the same mandarin in a tank at the LFS with no rock for a month he is dying slowly and living off his fat belly he obtained from eating to his heart's content in the wild before he was captured. If you have less than 100 lbs. of live rock per mandarin it will die. They eat so many copepods, isopods, amphipods, that without 100 lbs. or more of mature live rock per mandarin the pod population can not sustain itself with their appetite. One mandarin can eat half its body weight on more in pods per day.
As said before, it is completely worthless if they eat frozen/live brine because it has little/no nutritional value. A mandarin that eats only brine with die within a few months of malnutrition.
I have seen an adult mandarin starve in a 150 gal. with more than 200 lbs. of live rock over the course of a year. The mandarin was introduced when the tank was immature and had just finished cycling and the pod population was never able to reach its population maximum. The pods went all but extinct and the mandarin starved shortly there after.