View Full Version : Do clown knifes sleep?
graham
10-31-2006, 9:28 PM
Well do they? Mine swims around all day, and hides in his home, and then he swims all night. When does he sleep with his busy schedule?
CHOMPERS
10-31-2006, 10:17 PM
Good question. I have noticed that too. If I wake up at night, they are always somewhat active. They come out more at night too.
CHOMPERS
10-31-2006, 10:20 PM
By the way, I am not certain if fish sleep like we do. I think they go into a light sleep, ready to dart at the slightest disturbance. My cichlids go into a dormant phase but there is always one that stirs things up when the others seem to be just about to doze off.
AquataHolic420
10-31-2006, 10:30 PM
Some species only sleep at small periods at a time...
-snapple fact-Bullfrogs(american) are the only species in the world that never sleeps/drinks
-snapple fact- A seal only sleeps for 1 and a 1/2 minutes at a time...
graham
10-31-2006, 11:28 PM
By the way, I am not certain if fish sleep like we do. I think they go into a light sleep, ready to dart at the slightest disturbance. My cichlids go into a dormant phase but there is always one that stirs things up when the others seem to be just about to doze off.
my oscars used to float on their sides right near the surface and just drift a long, slowly paddling with one fin. Then I would turn the light on and they would wake up and freak out.
DeLgAdO
11-01-2006, 12:42 AM
clown knifes are noctural
they use an electro magnetic field to navigate in the darkness
stotty
11-01-2006, 1:08 AM
Most all fish spend time in an energy-saving state that can be called
"rest", and we might even call their behavior "sleep", though it is probably
different than "sleep" in most land animals. Many fish, like perch,pike rest on or under logs at night. I do a lot of night fishing and have caught a lot of big fish at night so they do feed throught the night.
Many fish "rest" or "sleep" during the day and are active at night instead, but almost all fish sleep.
importracer
11-01-2006, 1:27 AM
Parts of a fish's brain does shut off for "resting", while other parts are on for defense....When certain parts are rested, then they turn on and the other parts are shut off.....
yea, its like a defense mechanism as they always have to be alert. a lot (if not all) knives are nocturnal anyway
graham
11-01-2006, 11:41 AM
clown knifes are noctural
they use an electro magnetic field to navigate in the darkness
yes I know that, but that really has nothing to do with the question I am asking.
philhawk
11-01-2006, 12:50 PM
mine seems to go into a "sleep" many times during the day. will go to his territory and hover very still for half hour or so and then swim a bit and do it again.
Xanatost
11-01-2006, 1:01 PM
mine seems to go into a "sleep" many times during the day. will go to his territory and hover very still for half hour or so and then swim a bit and do it again.
Same with mine.:D
benzjamin13
11-01-2006, 5:59 PM
Clown Knives are noctural so they don't sleep at night really. They can be active during the day, especially during feeding time. If given a hiding spot, they will be in there for most of the day doing who knows what. They could be sleeping during that time. I hear a lot of fish rest half their brain at a time. That is how they "sleep." It wouldn't surprise me if the Clown Knives sleep like this.
KnivesRule
11-05-2006, 12:20 PM
My guys definately sleep. Sometimes they hover near the bottom, but other times they actually lie on the bottom. They used to be very active at night but as they have gotten older thy are less so. My little CK (14") freaks out at night if you wake him up. He darts around the tank swimming into things and even the glass sometimes. He only does this when he is sleeping at night. During the day if I wake him he is like the others and just swims to the side of the tank where I am.