I am begiing to think my rears are coming true 10 months ago I bought 2 leopard bush fish one was a bit bigger than the other.I had them for 10 months in a 55 lt tank with no problems .The smaller one has out grown the one that was bigger by quite a bit .Last week I re housed them into a 250 lt 4 foot tank loads of caves made from bog wood fresh plants so not heavly planted .Today I noticed the bigger one following the other one around the tank and when close enough will barge the smaller one.Should I be concerned.