Ruby Shark - Upside down?

dobra

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Jan 16, 2005
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New to this forum, so dont know if this topic has been covered before. Does anyone have a ruby shark that likes spending its days upside down, resting I think! I have a barrel which he uses to hide in - this is where he likes going upside down! Its quite comical, we wonder if he is copying our bristle nose catfish who does the same? I know he is healthy and happy - just wondered if anyone elses ruby does the same? Is he unique or is this a trate of this breed?
Thanks, Dobra.