Ruby shark problem

[gr8godbob]

Hi all,

I have a Ruby shark (Bruce). Lately he has been very listless and doesn't act like he used to. He was so full of life. He is not dead, so that one is ruled out.

Any suggestions

 

[CFC]

Well firstly theyre not catfishes.

 

[Lateral Line]

Has anything else changed? Feeding regime, tank mates, water. How old is he?