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cool yeah he has plenty of places to hide also the gars were in the tank first. also seems the gars go up to him trying to eat him untill they realize he is to big. I think it's the albino color the knife fish is the same size as the gars hahaI think it's an dominance thing, too.
Make shure the knife has a place to hide from the sev.
As long as the knife isn't hurten by the sev, i'd wait 1-2 days...i think the situation will calm of.
In my experience, cichlids alwasy want to show the new fish that they are the big fish in the tank^^
seems totday i seen the knife come out and the sevrum didn't attack him. Just seems the knife likes to hide alotDoubt it's just because it's albino. Sometimes a fish will hate another species with no apparent reason. Eg, my rainbow shark hates mollies but generally leaves similarly coloured tetras alone. Albino populations typically don't last in the wild mostly because they have issues attracting mates and lack of camouflage. But the whole deal with removing the severum and putting him back later to make him more peaceful is less likely to work in this case as you have no other territorial cichlid to take over the tank in its absence. If by now the severum hasn't calmed down and is having a noticeable effect on your knive's behaviour and appearance, I'd suggest you just rehome one of the two.