Younglin;5069582; said:A diet that consists exclusively of fish that contain thiaminase will cause a vitamin B1 deficiency. That is just a fact. In gars and every other fish. The OP said he intended to give the gar a good diet though.
way to speak in absolutes. and generally useless contribution to the discussion.
Pejelajarto;5070389; said:The main issues with farmed feeder fish is not really thiaminase at all but with the chemical cocktail of meds these things are exposed to. Of which copper is a major ingredient and which Gars are known to be sensitive to.
Thiaminase issues are easily countered with gutloading the feed items. It should be noted that thiamin issues are also very present in all fish live, dead, fresh or frozen.
Both Solomon and myself over the years have conducted many a study on gars and feeding/nutrition. Results have been very consistent in that the proposed malignant effects of such "feeder" items are minimal compared to the benefits to a young and growing gar.
Enough said.....
yup!
and finally...

Other then feeling like that... both my gar where raised on feeders and get live foods on a regular basis. as Pej just reiterated.. Thiamine is in ALL frozen fish. not just Cyprid species. But live feeder fish get a bad wrap. because they are often carriers of disease, and parasites often times. at No point was it suggested to the OP NOT to QT feeder 'nore gut-load them prior to feeding. a pretty simple stratagy I followed with my gar.