strange behavior

Hello everyone! I have a question about two damsel fish I have. My three striped damsel fish seems to always drop and swim sideways whenever he interacts with my Yellow tail damsel. Whenever he is near, he just seems to stop moving fins and allow himself to turn sideways and start sinking.... As...

I have a 120L fish tank. Have about 30 fish. Currently have 5 mollies and 4 fry. The first breeding pair of mollies were added to the tank over a month ago, they got on fine and everything was good, we then added a Dalmatian female molly and again everything was ok. Then a couple weeks later we...

Ok, so here is the scoop. I have two guppys, one platy, one swordtail, and one albino catfish in a 10 gallon tank. We have all live plants. We have had this tank for over 5 months now, and recently I noticed some strange behavior from most of the fish in the tank (catfish excluded). They are all...