What is the gender of the word "рыба-кит"? Should I say "огромная рыба-кит" or "огромный рыба-кит"?
Also, how should I change it if it is not in nominative case?
Gramota.ru suggests that рыба-кит is not used in any other forms, but as a native speaker I could easily imagine a context like "Богатырь победил рыб...-кит...".
рыба-кит, the author might have usedемуsimply to indicate the gender of the fish in question, similarly to how one could useемуwithрыба(as there is noрыбorрыбихаto differentiate between genders of an imaginary fish family). – Philip Seyfi Oct 09 '12 at 18:38победил рыбу-китsounds right, whileпобедил рыбу-китаdoes not. – Sergey Kalinichenko Oct 09 '12 at 18:47