. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. size of pond you have and the level of management you plan to follow. A pond that receives run-off containing herbicides or pesticides should not be used to raise fish, Foster says. Soil Conservation Services (SCS) agents in your county can help you decide how many and what kind of fish to stock in your pond. Under a low-management system you can stock your pond with fish, fer- tilize the pond to encourage aquatic plant growth (which attracts worms, insect larvae and other aquatic animals for the fish to e
. Coast watch. Marine resources; Oceanography; Coastal zone management; Coastal ecology. size of pond you have and the level of management you plan to follow. A pond that receives run-off containing herbicides or pesticides should not be used to raise fish, Foster says. Soil Conservation Services (SCS) agents in your county can help you decide how many and what kind of fish to stock in your pond. Under a low-management system you can stock your pond with fish, fer- tilize the pond to encourage aquatic plant growth (which attracts worms, insect larvae and other aquatic animals for the fish to eat) and harvest by hook and line or by seine. If you want to follow a more structured management system, perhaps for a small commercial harvest, you will probably want to feed the fish a com- mercial fish feed. Or perhaps you want to try cage culture. Steve Van Gorder of the Rodale Research Center says cage culture is one of the easiest methods of growing fish. At their Pennsylvania research location Van Gorder says tilapia, a hardy African food fish, and Photo by Pat Seip. Rodale Press catfish have been raised in pond cages. Researchers stocked a 3x3x4-ft. cage with 250 to 500 catfish. Van Gorder says at least 250 catfish must be put in each cage to prevent territorial fighting. The team fed the fish a floating feed, which doesn't escape the cage, and they periodically cleaned the cage of algae and debris accumulations to allow a good flow of water. When the fish were ready to harvest the cage was simply pulled from the pond. Van no natural exchange of water from a creek or river. Under a closed system the same water is constantly being recirculated and cleaned. Van Gorder says that using the Rodale method for backyard aquaculture, a person can set up a pool-culture system for between $500 and $550, not including labor, and that the system will pay for itself within five years. The costs run like this: a 12- ft. pool, three feet deep with a vinyl "We believe more people w
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