Assertion: angelfish's tank | /r/HasProperty | stable
Facets:
Source sentences:
text: The Blue-faced Angelfish, like other large angels, need a stable and established tank which is at least 6 months old with sponge, tunicate and algae growth.
text: The Koran Angelfish, like other large angelfish, needs a stable and established tank which is at least 6 months old.