valid questions motivated by concern over conditions
i was brief in my answer because i was on im.
to be honest some of my fish are extremely crowded, they are stuff i bred or got too many of or tossed together because i had to break down a tank or growouts, but those are in tanks i can do daily water changes on
these are pets, so if the arrows begin to show signs of distress I need to find them new homes
they are fairly content though
the big silver would only go to someone who had a 300 plus gallon
she can exist alone if she must in the 220