A system of osteocytes connected through canals within the vertebra. Osteocytes extend processes through canals within ossified bone. The lacunocanalicular system is poorly developed in zebrafish with most osteocytes having one or two cytoplasmic processes. [ GOC:cvs ORCiD:0000-0002-2244-7917 http://zfin.org/ZDB-PUB-22629-14 ]