Assertion: goldfish's system | /r/HasProperty | immune
Facets:
Source sentences:
text: Goldfish get sick or die because the conditions they are in have weakened their immune system.
text: On top of the high protein and healthy fats, the feed contains a fairly good vitamin and mineral profile, including essentials, such as vitamin A, C, D and K. Vitamin C is the most important vitamin for goldfish due to its immune system boosting properties, and can be found in this feed at a fairly high concentration.