re: food:
In the wild, there's lots of bugs in the diet (roughage), predation
(meats such as turkey or stuff from the fish dept of your grocery
store) and vegetation (fresh produce), so start by researching if your
fish are carnivorous, herbivorous or insectivorous (is that last one a
real word?). Avoid excess fats (probably doesn't exist much in
nature), so go easy on the red wigglers, and go heavy on the fibre.
Staple food was supposed to be all those things, but it loses al lot
in the processing, so it's not viewed favourably. Mix it up (flakes &
size-appropriate pellets) and alternate with fresh & the variety of
frozen foods available (bloodworms, shrimp, beefheart etc).
re: quarantine:
Between 2 and 12 weeks, depending on circumstances (such as knowing
where they originated, their age, their condition, amount & conditions
of travel, their fragility etc) and the value of the stock being
protected.
Generally middle-age larger fish travel better. Small fish usually
travel poorly, young are extremely susceptible, and certain species
don't travel well at all. Travel and dissimilar water parameters are
the main causes of stress, which allows contagions to take hold of the
weakened fish, using it as a host to launch the attack on the other
fish. Even a 12 week quarantine will not screen for everything (ie:
diseases where the fish is a carrier until stressed), but it will get
them through the stress of travel, water parameters and allow
sufficient time to make a good assessment of the chances of unseen
internal pathogens.
NetMax