On gloss:

fipybirka in sense "of fish"
b1 is a fin of fish x2=f1 of species x3=f2.
jacna'i on place 2
x1 is a fin [body-part] of x2.
fe'oi in sense "the end; of a story or punchline"
Vocative: Fin, the end, you may applaud now, conclusion; story ending or punchline marker

On affix form:

finti
x1 invents/creates/composes/authors x2 for function/purpose x3 from existing elements/ideas x4.

In definition:

limbirka
x1 is a fin (body part) of x2.

In notes:

tubra
x1 is a limb/appendage/extremity of body/entity x2 used for purpose x3