filial
Of, relating to or being a generation or the series of generations following the parental (F0) generation.
Ichthyological terms, not general ones.
Of, relating to or being a generation or the series of generations following the parental (F0) generation.
Term used in the fields of genetics and selective breeding in reference to the first filial generation, i.e., hybrid offpsring, of a cross between two distinctly different parental lines. Often used in aquarium literature to refer to offspring of F0 parents whether of the same species or not.
Offspring of the second filial generation, resulting from a cross between F1 individuals. Future such generations are termed F3, F4, etc..