I got him Friday, put him in some clean warm water and some AQ salt. This morning he died.
I'm not sure what was wrong with him. His fins were either chomped or rotted and his dorsal fin seemed to be cracked or folded at the body, it never stood up. No signs of any kind of fungus or wounds.
Anyway, any ideas as to his ailment? Or was he just too far gone?
I got him free from Petco, a "true rescue" according to the betta rescue police

He came in a shipment mid-week last week, got him Friday night. Not even named yet.