Is it very easy to take care of feeder goldfish?
it is not very very easy but some people have actually succeeded with feeder goldfish for all of their life.but if you have 150 goldfish in a 250g tank.then no.not possible.not even for a while.they will start dieing eventually.if they were less fish then maybe but it is too much.fish can get diseases if there are lots of fish in thew same tank you know.