ok so i put my 4 whiteskirt tetra's in the 5ft as thought best to take them out the assam tank, had no where else to stick them, think it's a bad move...The obscura was floating at an angle from side to side looking like a peice of wood<even lightened colour, would attempt an attack but never got anywhere, the pleuro even tried and the senegal birchir, then after a while they seemed to work as a team as in all 4......but haven't sucseeded yet!!!!