By Eric R. Danton Craig Finn spent a lot of time thinking about fish tanks in the spring of 2020. The Hold Steady singer had moved out of his apartment in Brooklyn to stay with family for his own safety while his partner, a nurse, cared for COVID patients. Friends were fleeing the city for less fraught, more spacious accommodations upstate. Yet wherever you lived, whatever you were doing, there was no getting away from the reality of those months. Having no way out of it brought images of home aquariums to Finn’s mind as he spent that initial lockdown working on new songs. “You know, you’re st…