Introduced as a private member’s bill. (These don’t often become law.)
Outside the Order of Precedence (a private member's bill that hasn't yet won the draw that determines which private member's bills can be debated), as of March 4, 2022
Subscribe to a feed (what's a feed?) of speeches and votes in the House related to Bill C-258.
This is from the published bill.
This enactment amends the Fisheries Act to prohibit finfish aquaculture for commercial purposes in Canadian fisheries waters off the Pacific Coast except when it is carried out in closed containment facilities. It also requires the Minister of Fisheries and Oceans to prepare, table in Parliament and implement a plan to support the transition to the use of closed containment facilities and to protect the jobs and financial security of workers in that sector.
All sorts of information on this bill is available at LEGISinfo, an excellent resource from the Library of Parliament. You can also read the full text of the bill.
Bill numbers are reused for different bills each new session. Perhaps you were looking for one of these other C-258s: