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July 31, 2008

Raising Fish In A Barrel

by Stowe Boyd

Years ago, I visited a friend's home in Amherst MA (I was an undergraduate at the time), and he was raising a fish -- I think it was a carp -- in a ceramic jar on his back porch. His parents -- who were from China -- had always done so, he told me. He said that he fed it table scraps, and things like stale bread. Whenever the fish would get too big for the (approximately 5 gallon) jar, he would cook it for supper, which is exactly what we did that evening, with a delicious black bean, garlic, and chili sauce.

It recently occurred to me that I had never encountered anyone else who was involved in this tiny scale aquaculture. But I have picked up threads here and there, that it was a commonplace in earlier times. American farmers have often grown catfish in unused watering troughs, especially those that are stream-fed, or in rain barrels.

I came across the reprint of a larger-scale experience of raising catfish in 55 gallon barrels, principally fed worms: Raising Catfish In A Barrel.

The take aways:

  • Earthworms seem to be a near-perfect food for catfish.
  • The Mahans -- the couple involved in the aquaculture -- siad that the entire apparatus they used cost about $15 in 1970s money, and required only 12 square feet of space.
  • The used a commercial aquarium bubbler to oxygenate the water.
  • Tap water -- if fluoridated -- must be left in the sunlight, exposed to the open air, for a day prior to being moved into the fish tanks. (Note: reuse of rainwater, which is what my college pal used, avoids this problem.)
  • The Mahans managed 40 fish in each 55 gallon tank. They were introduced as fingerlings, and were harvested when grown, but other measurements weren't taken.
  • Catfish convert about 85% of what they eat into meat, and a one pound fish yields about 10 ounces of meat.

The Mahons were in the business of raising worms, so they had an inexhaustible supply of worms handy. But my friend -- who lived with two other college kids -- harvested a fish every few months in the warmer parts of the year, just from table scraps and day old bread. And no bubbler.

Of course, you could just build in a more traditional koi pond, stock it with carp or catfish, and pull them out for dinner when they get large enough, too.

I found this setup on Flickr, which uses a barrel of plants, with the bottom half filled with sand and gravel, as a water filter for the fish pond.

There's a lot of room for experimentation with small-scale aquaculture. I'm going to try the 'carp in a jar' approach following my return from an East Coast trip in late August. Photo journal to follow.

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Comments

somehow the images generated by reading this story did not make me hungry for barrel grown fish, sort of the opposite.. :-)

Wait until the sh!t hits the fan with the coming dollar collapse. You'll change your mind.

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