This is another good sign. Fish that are hiding in an unnatural position are trying their best to get out of the aggressors territory. Lots of fish will hide, but when they are at the surface, corners of the tank, lying at odd angles or behind structures like heaters and intake tubes, then this fish is being overly harassed.DJRansome said:Agree. Sometimes you don't witness the chasing at first but look for it if you see any fish hanging around the surface or behind heaters/filter intakes.
The larger the fish is when you add it (to an established tank with other large fish) the longer the aggression lasts. It's always iffy adding adult fish to an established tank. These two may never call a truce.bywilli said:How long after introduction of a fish does the aggression stop? I have a standard 125g and I just added a 9" fusso, but my 7" venestus is not to happy about the idea. Currently the Fusso is being chased all the time. It has died down a lil bit after day 3 but still going on. Will this stop sometime soon or will these 2 never get along. Also is it typical for a fusso to fight back because this guy doesn't. I guess the big question is can these 2 co-exist?