Solitary Ember Tetras
Hi, Planted Tank Members
Pleased to meet you, I've some questions about the strange behavior of my ember tetra. I've found out there is one of my tetras that almost chilling at the corner of my aquarium (left side behind the plant, I have 6 tetras and it is on the back of my most left tetras) every time I catch my eyes on the aquarium. There is no sign of illness. Is it normal that the tetra being alone in the corner?
Ps: 3 tetras on the right side, near the thermometer, 1 on the center-left, and 2 on the left side (one behind the plant).