The moment that one decides to play God, and place a fish in a glass cage, the "natural" feeding method pretty much becomes a moot point.
Very few fish kept in captivity eat anything remotely close to what they would typically consume in the wild.
To state that one should only feed what is natural to the fish, makes little sense for most people that are keeping fish in aaquariums. In the wild fish don't eat frozen seafood, either. They don't have to be concerned with B1 deficiencies from thiaminase issues, and those that consume prey in the wild are also consuming the stomach contents of those prey, which in many cases consist of numerous phytoplankton, zooplankton, etc-etc.
Feeding live/frozen is fine, if you are supplementing that frozen/live food with the proper balance of vitamins & trace elements, as in the same level of micronutrients as your fish would consume in the wild.
It's all about balance, and in some cases feeding what appears to be a more "natural" diet, may in actuality fall far short of some of the higher quality commercial foods on the market.
My advice when dealing with fresh fish products, buy fresh, freeze for 48 hrs at 0F (-18C) to destroy any potential parasites, and use up within 30 days or so. Freezing will not destroy all micro-organisms, so there is still some risk involved in feeding frozen products, but freezing certainly minimizes those risks.
Freezing tends to also increase the concentration of thiaminase in tissue, so the shorter the duration in the freezer, the better. Little is known as to how thiaminase affects various species, and according to various studies the amounts found (even within the same species of fish) tend to vary as well.
Most public aquariums tend to supplement to avoid deficiencies. (especially B1, vitamin E, and vitamin C) IMO fish kept in captivity require full vitamin & trace mineral supplementation to some degree or another, which is where a high quality pellet can become worth its weight in gold. (even if it means stuffing some pellets into your frozen fish)
Also note that even frozen fish that have been unthawed under refrigeration , should be fed within 24 hrs. (or discarded)
A good read on this subject can be found in the following link.
Very few fish kept in captivity eat anything remotely close to what they would typically consume in the wild.
To state that one should only feed what is natural to the fish, makes little sense for most people that are keeping fish in aaquariums. In the wild fish don't eat frozen seafood, either. They don't have to be concerned with B1 deficiencies from thiaminase issues, and those that consume prey in the wild are also consuming the stomach contents of those prey, which in many cases consist of numerous phytoplankton, zooplankton, etc-etc.
Feeding live/frozen is fine, if you are supplementing that frozen/live food with the proper balance of vitamins & trace elements, as in the same level of micronutrients as your fish would consume in the wild.
It's all about balance, and in some cases feeding what appears to be a more "natural" diet, may in actuality fall far short of some of the higher quality commercial foods on the market.
My advice when dealing with fresh fish products, buy fresh, freeze for 48 hrs at 0F (-18C) to destroy any potential parasites, and use up within 30 days or so. Freezing will not destroy all micro-organisms, so there is still some risk involved in feeding frozen products, but freezing certainly minimizes those risks.
Freezing tends to also increase the concentration of thiaminase in tissue, so the shorter the duration in the freezer, the better. Little is known as to how thiaminase affects various species, and according to various studies the amounts found (even within the same species of fish) tend to vary as well.
Most public aquariums tend to supplement to avoid deficiencies. (especially B1, vitamin E, and vitamin C) IMO fish kept in captivity require full vitamin & trace mineral supplementation to some degree or another, which is where a high quality pellet can become worth its weight in gold. (even if it means stuffing some pellets into your frozen fish)
Also note that even frozen fish that have been unthawed under refrigeration , should be fed within 24 hrs. (or discarded)
A good read on this subject can be found in the following link.
FEEDING CAPTIVE PISCIVOROUS ANIMALS:
NUTRITIONAL ASPECTS OF FISH AS FOOD
http://www.nagonline.net/Technical Papers/NAGFS00597Fish-JONIFEB24,2002MODIFIED.pdf
To the OP, sorry for derailing your original topic.
I'll go back to my cave now. :lipsseale
NUTRITIONAL ASPECTS OF FISH AS FOOD
http://www.nagonline.net/Technical Papers/NAGFS00597Fish-JONIFEB24,2002MODIFIED.pdf
To the OP, sorry for derailing your original topic.
I'll go back to my cave now. :lipsseale

