Neither ‘Fishes’ nor fowl
The biggest problem at the core of "Nothing Left on Earth Excepting Fishes" is that I just can’t bring myself to care about Ed Mercer’s poor broken heart, and the episode really, really wants me to. The second-biggest problem is this episode recycles so many over-worn tropes that I grew restless and bored with stretches of it.
Then there’s the ending, which tries with all its might to be simultaneously offbeat and poignant (as a shuttle flies off to Billy Joel), but falls flat because such pretentions only work if there’s a workable emotional core beneath the surface. There isn’t here, so it feels like an audacious but empty artistic conceit. I’ll give Seth and his crew an A for effort, but a C for the end result.