Thank you! My Jack dempsey is housed in a 125 gallon tank with 2 canisters and 2 emp400's. Just a basic set up (wish I'd gone wet dry of course it's never to late). He's about 5 years old and when my daughter was 3 she named him rainbow fish. Anyway, his tankmates are 2 oscars and 2 severums. I have'nt had to much problem with aggression from the jack. He does'nt mess with the severums at all and will sometimes charge at the oscars.
The oscars on the other hand have been somewhat of a problem lately as my larger red O has been somewhat of a bully to the tiger O but seems to be mellowing out now.
It's funny the way the JD has come out of his shell since living with the O's, he used to be pretty skittish. Now he behaves much like the oscars do.
Here's how it looks right now. Oh and I almost forgot about the silver dollar thats been rainbow fish's long time tank mate.
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