I have recently purchased 4 yoyo loaches that are about 3/4 of an inch long and are currently in my 10 gallon tank as my new 75 is currently being set up. So in a couple of months I will move the loaches to the 75 and probably add another two or three.
Anyway, my 10 has a sand substrate and many rocks that form a cave like structure in the back, and it has two java ferns and a valisneria. My question is it normal for the yoyos to swim up and down the tank wall constantly without end. Whenever I look at the tank I see two yoyos just swimming up and down the wall. The other two occasionally join in but they also venture around the rest of the tank. The first two are confined to the back left corner of the tank next to the HOB filter. Is there something the matter or am I just being crazy?
Thanks!
