American Flag Fish In Community

[radioman]

I got an American flag fish about a month ago to help clear some algae but I saw her chasing some fish around today and spotted a split on a tail that I am not sure was there before. Also I bought a male sunburst wag platy yesterday and today his tail looks chewed on. To tell you the truth when I got him his tail could have alreday been like this and I did not pay attention because I also got alot of tetras the same day. my gourami has also chased a fish or two but I have never seen visible damage. So is this something that I should be worried about because I have never seen damage before except for today. Also I bought a second female to give the first one friendly.

 

[Tokis-Phoenix]

As far as i am aware both male gourami's (depending on the type) and male flag fish can be territorial, so it would be good to find out the genders of the fish.

 

[radioman]

The flags are female for the territorail reason the gourami I am not sure but I have no problem with him because he has never really caused problems.

 

[BigC]

Firstly are you sure you have a female (the sexes are quite distinct) Males are more colourful. Females are stocky, smaller and somewhat drab and will have a dark spot on the dorsal fin.

Jordanella floridae (American Flagfish) can be quite territoral at times especially when breeding or a male kept on his own. I have bred these on may occasions and find them a beautiful little fish but as I said earlier some rogue males can become quite boisterous.

Never kept a lone female with community fish, so maybe female develop the same trait. Keep observing and you will find the true culprit.
Regards
BigC