Blackwater guru
Fish Fanatic
Recently I got my first aquarium set up which was a 140 liter aquarium and as of now I have 10 cardinal tetras along with 4 corydoras duplicareus.
My plan here later on is to add dried leaves and suitable pieces of driftwood to really recreate the natural habitat of these fish where leaf piles and driftwood is common along with tea coloured water.
I just observed my fish early in the morning and I noticed that the corydoras tend to stay fairly inactive and that they appear to be floating on the bottom as if sleeping.
The cardinal tetras on the other hand seem to be more active preferring to stay around the black background of the aquarium.
I am aware that fish do not have eyelids and that they have no rem sleep like humans.
I am wondering how they sleep because I never kept cardinals before and this aquarium is my first although I have been researching intensely for the last few months.
My plan here later on is to add dried leaves and suitable pieces of driftwood to really recreate the natural habitat of these fish where leaf piles and driftwood is common along with tea coloured water.
I just observed my fish early in the morning and I noticed that the corydoras tend to stay fairly inactive and that they appear to be floating on the bottom as if sleeping.
The cardinal tetras on the other hand seem to be more active preferring to stay around the black background of the aquarium.
I am aware that fish do not have eyelids and that they have no rem sleep like humans.
I am wondering how they sleep because I never kept cardinals before and this aquarium is my first although I have been researching intensely for the last few months.