Silver tips contain thiaminase?

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Mount_Prion

Mount_Prion

Piranha
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Jan 31, 2012
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It's my (admittedly uninformed) understanding that these little fish I've been buying as snake feeders from my LFS, "silver tips", are tetras of some kind. At least they look it. Anyway, do they contain thiaminase? It dawned on me that I just sort of assumed they didn't cause I hadn't heard that they were a type of fish that does.
 
I've never heard of feeders called this - There are "Silver Tip Tetras" but those are usually sold as community fish. This has me curious!
 
From what I understood, coldwater/temperate fishes (goldfish FW, SW anchovy) happen contain a lot more thiaminase than tropical fishes. I think most organisms contain it just in different levels. Heck, even plants have it.
 
I've never heard of feeders called this - There are "Silver Tip Tetras" but those are usually sold as community fish. This has me curious!
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Oh nah that's exactly what they are. They're meant as community fish. I buy them in bulk as snake feeders.

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Generally the only fish that contain a relatively large amount of thiaminase are cyprinids - Smelt, Goldfish etc. Salmonids and tetras contain almost no thiaminase.

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