I have two Cardinals and one of them is way too aggressive towards the other one. The weaker one just hides behind my overflow box and is too scared to come out.
I took the more aggressive one out for 3 whole weeks to let the weak one establish territory and defend him/her self. However, after 3 weeks I put the aggressive one back and he still wont let the smaller one come out. Its just not happening…
I don’t know much about cardinal behavior – These are my first two. I bought them because I like how they swim and was told that they are very peaceful fish. And its true, they are very peaceful with the other fish, but not with each other. I was also told that cardinals should be kept in groups of 2 or more but obviously that is not working out.
Do I need to take them out or is it ok if they keep going at each other the way they have been. No injuries have happened. Just a lot of chasing around. The big one doesn’t let the small one come out of his or her hiding place…is this a problem?
I couldn’t catch these two fish even if I try all day long. I really really don’t want to remove my rocks again (this would be like 5th time in less than 2 months I have had to remove my rocks for one reason or another, im just getting tired of it).