What are the differences in rights and responsibilities between a custodial father and a biological father?

A custodial father has legal custody of the child and is responsible for their care and upbringing on a day-to-day basis. A biological father may have visitation rights but may not have legal custody or decision-making authority. Both fathers have a responsibility to provide financial support for their child, but the custodial father typically has more direct involvement in the child's life.