I have 7 Tiger Barbs and have noticed some strange behaviour of an evening. They regularly chase each other round the tank, when this happens, their fins become really erect and red.
There's one Barb in particular (I'm pretty sure it's the same one each time) which seems to turn almost completely black - the orange parts go really really dark. It seems to be this guy which does most of the chasing.
Does anyone know why he turns this colour? Another weird thing I noticed was one of the smaller chaps nosing into the side of one of the larger guys. It didn't look particularly agressive, just a bit strange.
Oh, one last thing - anyone heard of them eating algae? I've got some hair algae on some of my tank decorations & I've caught them ripping bits off and eating it!
There's one Barb in particular (I'm pretty sure it's the same one each time) which seems to turn almost completely black - the orange parts go really really dark. It seems to be this guy which does most of the chasing.
Does anyone know why he turns this colour? Another weird thing I noticed was one of the smaller chaps nosing into the side of one of the larger guys. It didn't look particularly agressive, just a bit strange.
Oh, one last thing - anyone heard of them eating algae? I've got some hair algae on some of my tank decorations & I've caught them ripping bits off and eating it!