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Q: Can an angelfish sleep upside down? ( Answered,   0 Comments )
Question  
Subject: Can an angelfish sleep upside down?
Category: Science > Biology
Asked by: dragon4021-ga
List Price: $3.00
Posted: 10 Jun 2004 23:24 PDT
Expires: 10 Jul 2004 23:24 PDT
Question ID: 359567
Can an angelfish sleep upside down?

Clarification of Question by dragon4021-ga on 10 Jun 2004 23:32 PDT
I have an angel fish who has been hurt. One of his eyes was dammaged
in a fight with another fish. Everytime I turn the light off in the
tank he either leans on on side or tottaly flips upside down until the
light is turned back on. I'm convinced that this is normal, due to the
damage he recieved in the fight with the other fish. My mom says that
him laying on his side and flipping over is hazzardous to the fish's
well being. Please add some clarity to the matter.
 Thank You
    Dragon4021
Answer  
Subject: Re: Can an angelfish sleep upside down?
Answered By: tlspiegel-ga on 11 Jun 2004 00:51 PDT
 
Hi dragon4021,

I'd like to direct your attention to the Important Disclaimer at the
bottom of this page.

"Important Disclaimer: Answers and comments provided on Google Answers
are general information, and are not intended to substitute for
informed professional medical, psychiatric, psychological, tax, legal,
investment, accounting, or other professional advice."

You might want to call a veterinarian in your city and ask them for
advice, or call a local aquarium store and explain the situation to
them.

Because he was injured in a fight (angels are prone to being very
territorial and do get into fights) there is a possibility he has
developed a secondary infection from the injured eye.  That infection
is called Swimbladder Inflammation (SBI).

Diseases & Treatments
http://tropical-fish.net/fish_diseases.htm
  
Symptom:
Loss of balance with fish unable to stay upright. Fish may be able to
maintain position when swimming, but turn over when they stop
swimming.

Potential Causes:
1) Swim-bladder disorder / disease caused by viral or bacterial
infection, constipation (mainly fancy goldfish) or other organ
disease.

Treatment: 
1)  Add 1/2 tsp. seasalt/gal, or treat with commercial products
(MelaFix, antibiotics & sulfa compounds) from your local fish shop.

=================================================

The other possibility is he is sleeping on his side to protect the
injured eye, and is startled when the light is flipped back on...
hence he flips into a swimming position.

Topic: Sick fish or just don't like mornings?
http://www.angelfish.net/yabbse/index.php?board=5;action=display;threadid=2275;start=msg20329#msg20329

Danielle,

Have you ever been rudely awakened from a very deep, peaceful sleep? 
It scares the bejeebers out of you!

I am thinking that they are just being startled.  Maybe leaving a
nightlight on would help.  Would be worth a try to see if the
behaviour changes.

One question.  You say this is a new pair.  What size tank are they in
now and what size tank did they come from?  I just a couple of days
ago, put a young pair (small) in a 10 gal tank.  These guys were
accustomed to being in a 135 gal tank with very few other angels, just
1 HUGE pleco that likes to clean his slate, ummm plate.

After introducing them to their new home, or cramped apartment, I
noticed the male doing some of the similiar actions that you
described.  He even swam upside down, did somersaults, laid flat on
bottom, all very slowly, and then would right himself and stay that
way.  I'm figuring that he was stressed due to the change of size of
environment more so than the water conditions.  Today, he is much
better and they are even cleaning the slate!

Just MHO.

Janet

*****

Angelfish Discussions / Angelfish Diseases / Sickness / Medication &
Urgent Help / Re:Sick fish or just don't like mornings?

Does this happen when you leave the tank light off and just turn on
the room lighting first?

I noticed some weird behaviour, like sleepwalking, in my male many
months ago.  To "treat" I started by turning one light on at a time in
the room and then worked up to their light about 20 minutes later. 
The gradual increase in room lighting helped and the behaviour
stopped.

========================================

Miscellaneous Fascinating Fish and Aquarium Facts
http://www.aquariumpros.com/articles/fishfacts.shtml

"Fish do sleep. Most fish don?t have "eyelids". If the aquarium lights
are left on for twenty-four hours a day, the fish will not sleep. They
will become stressed, and eventually they?ll die.

Most fish sleep lying on the bottom of the tank. If the room is dark,
and you?ve just turned your aquarium lights on, don?t worry, your fish
aren?t dead, they?re sleeping!"

[edit]

"Fish occasionally exhibit "odd" behavior. A fish that is quivering,
fluttering its fins, or shaking in front of another fish, is probably
exhibiting a breeding or defense behavior. Watch and see if the fish
does this when another fish approaches it. Some fish gape at another
fish with a wide open mouth, which is a defensive behavior. Fish that
lay on their sides when another fish approaches are displaying
"submission" to another, stronger tank mate. Another submissive
posture is exhibited by some species by remaining motionless in a
head-up position for a few seconds. Saltwater angelfish often swim on
their sides."


Best regards,
tlspiegel
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