Ok, even though the goldfish are absolutely beautiful, I'm goign to release them into my parents pond which contains 4 koi(about 5 inches each) and about 5 feeder goldfish ranging from 1 to 4 inches. The only problem is that we have a little heron problem and he seems to love goldfish, we put a net over the pond as well as a fishing line fence, but this bird is smart as can be and still finds his way into the pond. Also, i heard that Koi sometimes get aggresive and attack fancy goldfish-is this true??? Other than that, i might get a bigger tank in the future and take my two goldies back, but for now im gonna try some tetras and really work on the plants. Also, about my pleco, if i release him into the outdoor pond, are the goldfish in danger, the thing is only 3 inches long???