Minimum tank size for the following fish?

[Zionas]

1. Yellow Pyramid Butterfly

2. Spot Breast Angelfish

3. Watanabei’s Angelfish

Could they potentially fit into a 90-100 gallon tank if kept as singles?

 

[pcon]

125 conservatively and 180 liberally.

 

[hds4216]

90 is too small imo.

 

[Kal93]

Watanabei’s angelfish grow pretty big. I would say no less than 125G/6'

 

[Zionas]

I thought Watanabei’s gets to like only 6”?