I heard the same thing , I heard they can become mean later to other chromis and smaller fish, it's only somethng I heard or read though never seen an aggressive one and I had two for a bit. I find the gren a bit boring on colour:)

Anthias are always nice

yes
 

Very nice but I think too high maintenance for me.

I've heard that there are a few species of cardinal fish that are true schooling fish. Some of them are quite small - in the 2 - 3 inch range. Sort of like neon tetras for the marine tank.

Banggai
 

I have been considering Banggai Cardinals.... but for a school they can be costly. But it is one of my considerations... as well as Chromis.

I had a group of 6 green chromis in a 135. They were fine for a year of so untill one got bigger than the rest and he bullied the others until he was the only one left.

Bangai's are rally nice one of my favorite fish I love that sparkle t them:) maybe if you buy alot of them you culd get a deal I'd even be interested in a joint order for some:)

Price
 

They are priced the same at the LFS as online. Not really worth ordering at that $30/each.

I wouldn't bother with Bangaii Cards as more than two will usually go after each other untill you are down to one or two. Blue eyed , or ''Glass '' Cardinals are one of few true schooling fish I have found for our tanks, they are very peaceful and quite hardy once you get them eating well, I have a school of 8 in my tank and they almost always stay in a tight area together.

I also agree with most of the others in the fact that over time your ''school'' of chromis would end up being a fair bit smaller than what you started with , as in most cases they will go after each other eventually.

Had the bunch of green Chromis as well, wasn't like they schooled but they would occasionally hang together. Maybe they might of if their tanks mates could of eaten them.

After a few years now down to just the one remaining. Wasn't like they were getting beaten on then died, just seemed to disappear months and months apart.