What is the smallest silver dollar type fish?

[RD.]

Yes, red hooks get a LOT larger.

 

[Boomer1224]

silver dollars are pretty non aggressive fish but they will chase each other like crazy

 

[Stanzzzz7]

How do the multiple chalceus get along?

Beautiful tank

Thanks,
The chalceus get on fine.The only time they ever chase each other is feeding time.
I've not had a lot of luck with them to be honest. I started with a group of Severn,one jumped out of the tiniest of gaps in my hood.
My external filter leaked and flooded my house and I lost another two and one just vanished.
The three remaining seem to be doing great though. I would like some more,but I can only find juveniles that my ray may be able to eat.
Great fish though.