I have 3 angelfish in a 40 gallon. The pecking order goes largest to smallest. The smallest is bullied lots, and its fins are very jegged due to nipping. The smallest one is usually up in the corner and isn't so much swimming around, so now I'm worried. What would fix this?
Getting a new angel to mess up the pecking order?
Add some dither fish? (I already have 6 cardinal tetras and 6 zebra danios)
Get some more plants to add some cover?
Get rid of one (only if I have to, I really, really don't want to)