Originally Posted by Aliray
I feed my fish twice a day , every day. I doubt if a fish goes without eating in the wild.
the only type of fish that do not eat/graze on an almost constant basis are larger carnivores. The majority of the small fish we see available for home aquariums feed pretty much constantly in the wild.
One exception would be mouth-brooders when they are caring for their eggs.
Hobbyist follow stringent feeding regimes in order to maintain water quality, not really out of any real health needs of the fish.
Yes, there are times when a fish may benefit from an occasional fast, fancy goldfish being one type that does benefit from fasting, but frankly that is more due to the muck-up that is their digestive tract thanks to the genetic manipulation over the years to develop some of those lines.
Natural carp have no need to fast for digestive issues.
anyway, enough rambling.
I feed my salt tanks once a day with an occasional day long fast, in interest of water quality.
My freshwater tetra tank gets fed about 4-6 times a day, but the set-up is not conventional so it can easily manage the bio-load.