Help! Angels Have No Fins!

[rvpeary]

Please can some one help me? I have 1 large angel who is in no way aggressive and 4 smaller. Iv had the larger for over a year and the small for about a month. Today two of the small angels have lost there whole top fin and others have been nipped. I'm almost positive it isn't the large angel. However I have a blue acara and a Siamese fighter, could it be one of those???

 

[Fish Guy]

It could be either of the others, well more likely the angel or acara. That is a hard combination of fish to have as with the different sizes, aggression levels and damage each could do. What size is your tank? I would take out the small angels and grow them out a bit in another tank and get them back up in health.