ZebraPleco.com • The complete Hypancistrus zebra resource

Should i be worried about this activity..

There just sitting there waving there tails now and then.

There in a round terrocotta tube.

This question is kind of hard to answer. That depends on how big are they. Sub-adults and juvies always share caves. But when they grew to adult size. They will each claim their own caves. 3 adults in 1 cave only means some one is going to get hurt. I would not leave them in there for more than 2 days.

There just about 2"' long, but now there's only 2 in the cave.

They have never breed, yet.

Thanks for the heads up.