If anyone could tell me what they are doing... It sure looks violent and one of them already has an (already healing) infection. This happens usually after feeding time, after they've had enough.
My aquarium water stats;
temperature 24*C
ph; 6,5 - 7,5
gH; 8 - 9
80 litres, 1 x 15w lamp, eheim 2211 pump.
7 ghost catfishes, bought from different dealers. (explains why some have big eyes, and another smaller eyes) They NEVER form a group, always smaller groups. 6 out of 7 are doing this weird behaviour. The fish on the bottom is a Gold Spot Dwarf Pleco (Parotocinclus spilosoma)
