Thank you! I was dawdling pretty slowly with it, but I don't think it would've taken more than a couple hours on the sculpt and around one on the retopo?
I box modelled the fish instead of doddering around with sculpting (which I really should've done with the bird as well, but was craving getting some sculpt work done) so they thankfully were much faster to bang out in one go. Also helps they're much simpler too. :')