I have seen feather dusters do this when stressed (by moving or some rapid change in the tank). Once the stressor was removed, they stopped and were perfectly healthy.
More than likely stress has forced a spawning event. (not defense but survival mechanism) You typically need to supplement small tanks like that with Phyto to keep feather dusters healthy
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.