I have found this kinda odd lately, so thought I would ask.
I have a 20g tank with 3 rainbow thread fins (2 female, 1 male). They always stay at the bottom of the tank and eat sinking food.
But when I clean the tank, I leave the hood light off for a bit after, it seems to make it less stressful for them and they come out of hiding much fast.
But then they swim right at the top of the water, eat off the surface, and it is just completely out of character of them. Also, the male will then go lay on the bottom. Right on the gravel! Until one of the girls come and nudge him and then he swims around normally again. Next, I see these cob web type things hanging off plants often now. Are they eggs?
So, is this a sign I should change the water more often (I do it every 5-6days). Or is this normal and ok?