Silver Dollar fish

[paigeoa]

Hi guys!
We have a 55 gallon tank and have 7 tiger barbs and a rainbow shark and a dwarf pleco.
We want to add silver dollar fish, I've researched that they are compatible (we've had them before) but want to make sure the tank is big enough for 6 silver dollars. I know the rule of 1" of fish per gallon of water, but want the dollars to be happy and thrive.
Thanks in advance

 

[Eric Ripper]

I've kept 3 Silver dollars in a 55 gallon. I used them as dither fish for my Oscar when he was younger.
That worked out fine but 6 imo might be at the limit of what id feel comfortable with.
Hth