I just thought of why your krib made friends with the platy fry. Because kribs practice such dedicated brood care, he may have thought it was his baby. o.O
It ends, but it has A LOT of side quest, the entire game has 300+ hours of gameplay, for an awesome gamer. The side quest are really the game's main feature, ironically.
Does this game ever end or can you keep playing until you've become the leader of every guild or something like that? Like how most games have a main quest but you can keep playing after you've finished the story.