Sad that there are piranhas and oscars that are kinder and gentler souls than their owners.... considering that we ought to know better by now. When we adopt the oscar from the university he will never eat a goldfish (but he does and will continue to eat many, many spiders)
For what it's worth, long long ago I witnessed the same thing with a betta and a goldfish in a bowl. (This was before I could have possibly known any better, I was no more than 6 years old)
Got a question about loaches? Ask me!
Loach count: 21
Baby fish count: 700+ (shelldwellers, gbr, angelfish)