What is this?

[Psyberfox]

Hello everyone, I have had my tank tank for almost a month now, but a few weeks ago I noticed there were a little sac attached to one of the fake plants. There also seems to be a white string attached to this sort of orangey white sac.

Any ideas of what this is?

 

[Katie217]

what type of fish are in the tank? size, params? we need WAY more details, possibly some pictures too.

 

[Psyberfox]

There mostly tetras, I took a picture but can't seem to post it here. Any got any ideas?

3 black skirts
3 white skirts
3 red eye black fins