Man, I didn't think it was possible due to size but the chaoti wrasse went for a ride into the weir box of my overflow. He was too large to actually make it into the bulkheads completely. I saw his tail sticking out of the bulkhead when I went looking for him and thought he was a goner. I pried the weir out a bit in front of the bulkhead and was able to get him to push into the rear box and catch him. I released him and he swam around, fed the tank and he nibbled then shot into the sand.....fingers crossed he's okay. His gills look spread out a bit but he was breathing heavily, I just hope there was no damage done. Luckily it's a thick coated fish, lots of feather dusters and stuff to get scratched up on in there. All his fins looked to be mobile while he swam around for a short while so hopefully he pulls through.