[jeddy hao]

This article shows more fish that contain thiaminase. Check it out. It is cool to read as well.
http://www.austinstu.../Thiaminase.htm

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[taylorhedrich]

Nice informational link. It helps a lot. Thanks for sharing.

[doctorvtec]

Excellent read on Thiaminase! This ones going in my "Fish Links Folder" Great post.

[mashunter18]

not bad if you dont know what thiaminase is........

[doctorvtec]

mashunter18, on Jul 29 2005, 11:00 PM, said:

not bad if you dont know what  thiaminase is........

I liked it for the various list of thiaminise containing fish. Thats one thing I never remember since I don't have to worry about it.

This post has been edited by doctorvtec: 29 July 2005 - 10:44 PM

[PuffPiff]

i like to keep a heads up on what fish contain this evil chemical

[acestro]

Great link! I only wish they discussed which of these fish contained more or less (or if they all contain the same) amount of thiaminase.

Had to copy this list unless the link went dead, moving to scientific....



a. Fish Reported to contain Thiaminase:

White Bass – Morone chrysops

Bowfin – Amia calva

Bream – Abramis brama (Not the U.S. fish; see this link).

Buffalofish – Ictiobus cyprinellus

Bullhead catfish – Ameiurus m. melas

Carp – Cyprinus carpio

Channel Catfish – Ictalurus punctatus

Fathead minnow – Pimephales promelas (the red rosy is a color morph of this fish!)

Garfish (Garpike)

Goldfish – Carassius auratus

Moray Eel – Gymnothorax ocellatus (since someone recently asked about keeping the brackish water species with turtles…)

Gizzard Shad – Dorosoma cepedianum

Spottail Shiner – Notropis hudsonius

Buckeye shiner – Notropis atherinoides

Central Stoneroller – Campostoma anomalum pullum

Common White Sucker – Catostomus commersoni

Lake Whitefish – Coregonus clupeiformis



b. Fish Reported to not contain Thiaminase:

Largemouth Bass – Huro salmoides (I think that’s actually now Micropterus salmoides)

Rock Bass – Ambloplites rupestris

Smallmouth Bass – Micropterus dolomieu

Bluegill – Lepomis macrochirus

Chub (Bloater) – Coregonus hoyi

Cod – Gadus morhua

Crappie – Pomoxis nigromaculatus

Eel – Anguilla rostrata

Northern Longnose Gar – Lepisosteus osseus oxyurus

Northern Pike – Esox lucius

Pumpkinseed – Lepomis gibbosus

Salmon – Salmo salar

Brown Trout – Salmo trutta fario

Lake Trout – Salvelinus namaycush

Rainbow Trout – Salmo gairdnerii irideus

[acestro]

The reason why I'm curious about 'amounts' of thiaminase is that I fed goldfish to watersnakes once a long time ago. They died horrible deaths, it was really sad. I switched to shiners and only lost a small percentage of snakes over a year or two (watersnakes again). It seems that shiners may also contain thiaminase but the deadliness seemed to not be equal between shiners and goldfish. Interesting stuff.

I really wonder where silversides fall out here (or livebearers). Does anyone know?

[rbp 4 135]

i noticed that it was present in channel cats, which is probably where the majority of the catfish fillets come from. this substance should still be present in the meat even after freezing. mabey catfish fillets aren't a verry good food for our fish after all.

[acestro]

Also, how is garfish(garpike) on one list and northern longnose gar on the other? Kinda strange.

*edit* If you look at the link there were two separate studies, the older one stating that garpike (and they had no species name listed) had no thiaminase and the newer one stating they do. I'd lean towards the newer one being true. The 'ancient' fish, lamprey, bowfin, gar, seem to have it as stated in this study.

It looks a lot like a group called ostariophysians tend to have thiaminase. This group includes minnows, goldfish, catfish, suckers, and even characins. Silversides and livebearers are in a separate grouping that may not have this. Very interesting. Besides the white bass and the 'ancient' fish I think almost all of the thiaminase fish are ostariophysians. The white bass reference comes from the reference that says garpike do not have thiaminase, so maybe 'perch-like' fish dont have it after all.

This post has been edited by acestro: 31 July 2005 - 09:09 AM