Assertion: lobe's number | /r/HasProperty | retained the physostome condition
Facets:
value: with being open
type: OTHER
Source sentences:
text: In most of the ray-finned fish the sacs evolved into closed off gas bladders, while a number of carp, trout, herring, catfish, and eels have retained the physostome condition with the sack being open to the esophagus.