Yep, he is in it by himselfWoah, 29 gal. Well, just him in the tank?
I am just hoping the poor baby survives the night.He's probably a little scared of all the wide open space - to him, lack of cover means plenty of opportunities for predators to see him and catch him. Try absolutely packing the tank with stuff. Floating plants will also help (to hide him from all the birds).