Hi, friends. I need some advice on what to do with an injured danio. was just doing a water change and found one if my danios stuck in a decoration. There was a pebble wedged in a pass through and he got stuck. I got him out but he is scraped up on both sides and is swimming slanted up. I think he damaged a fin on his belly. The tank is a 10 gallon with just 8 danios and 3 snails. Do I need to treat this guy or separate him? If do, how? I've only had the tank for a year and this is my first fish injury. Any advice is appreciated!