For the disappearing fish problem, you may want to look into pond netting. It could prove to be just enough of an obstacle to deter the raccoon(s). Also try placing strong-scented substances in dishes around your pond, such as garlic and chili powder or Irish Spring soap. Make sure that any run-off produced by these substances doesn’t enter your pond and that a curious dog doesn’t sniff the wrong thing!
For the disappearing fish problem, you may want to look into pond netting. It could prove to be just enough of an obstacle to deter the raccoon(s). Also try placing strong-scented substances in dishes around your pond, such as garlic and chili powder or Irish Spring soap. Make sure that any run-off produced by these substances doesn’t enter your pond and that a curious dog doesn’t sniff the wrong thing!