Ok, this may sound a silly question.. but do puffers sleep on the bottom of the tank??
the thing is, i have 3 dwarf puffers and there fine during the day, all swimming around etc then at night they fine a quiet spot on the bottom of the tank or a nice hide out by a rock and then they just lay there all still and move to the current in the tank.. they stay like that till i see them in the moring and then there swimming around again....
do i have reason to be concerned or is this normal behaviour?? do fish sleep?? are my puffers ill??
sorry this may sound silly but im new to this and im worried my puffers might be ill. I have lost 2 dwarf gouramis and 3 glow light tetras in the last two weeks... no wonder im worried!

the thing is, i have 3 dwarf puffers and there fine during the day, all swimming around etc then at night they fine a quiet spot on the bottom of the tank or a nice hide out by a rock and then they just lay there all still and move to the current in the tank.. they stay like that till i see them in the moring and then there swimming around again....
do i have reason to be concerned or is this normal behaviour?? do fish sleep?? are my puffers ill??
sorry this may sound silly but im new to this and im worried my puffers might be ill. I have lost 2 dwarf gouramis and 3 glow light tetras in the last two weeks... no wonder im worried!