I've seen several conversations on here where someone will mention giving their ducks small fish to snack on. I think my two little ducks would be thrilled to try them. When can they start having these? Are they just little pet store fish? Are there any they shouldn't have? When I had Chinese Water Dragons, they could have them and we'd get tiny little tetras or gold fish from Petsmart but obviously ducks aren't water dragons. So, what's the deal with giving them some little fish to hunt down?