Live Food: Goldfish, Guppies?

Go buy some frozen raw shrimp...cut it up and feed them only that till they give in and eat it.
The shortnose gar in the 150 eats it with no complaints.
So do the bichirs.
Starve 'em to switch.

There's something in the goldfish that messes up some vitamin or something in many fish, causing long term problems. It is mentioned a few times in the "are feeders bad' thread...

I'd say just get a 20 gal tank and start raising guppies.

its an enzyme called :THIAMINASE found in goldfish. It destroys vitamin B1 .

Roseys are better than goldfish, guppies are better than rosies, gambusias are better than guppies and a well mixed diet is better than any one fish, even the pickiest eater will take fairy shrimp and small eath worms. mix it up. How would you like to live on nothing but pizza? You probably could but you would die young. Goldfish would be like living on top ramen.

redtailfool said:

its an enzyme called :THIAMINASE found in goldfish. It destroys vitamin B1 .

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Can you show scientific research that proves that fact, if at all possible could you provide a link. One more question, why is it only gold fish that seem to have it, wouldn't other characin's or other fish have this enzyme too.

Its because of how they are raised in fish hatcherys I believe. Raising your own would probably be fine but a pretty large undertaking. Goldfish are not characins BTW.

well i have herd that feeder gold fish or guppys is bad to give to ur fish. And eat even worse when u keep them in a dirty tank so this is what i do. I raise my feeder fish. i use comets now. If you feed comets alot they will grow big in time really BIG. The key here is to give them a clean tank with food and lots of water changes believe me ive bin doing this for three years already and it works like a charm usally it takes some time so i would like have three tanks i would raise the babys in one tank then when there bigger i pass them on to the juvinile tank when they get a little bit bigger i pass them on to the pre adult tank then when there mature and plump u give them to ur fish and take some pop corn and sit bak and watch ur fish tare up those comets



its really fun

CONVICTS!! Easy to breed and grow out! Plus you can gut load them on high quality foods!!

ashdavid said:

Can you show scientific research that proves that fact, if at all possible could you provide a link. One more question, why is it only gold fish that seem to have it, wouldn't other characin's or other fish have this enzyme too.

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http://www.austinsturtlepage.com/Articles/Thiaminase.htm