Im brand new to fish keeping, so I don't know if I'm being paranoid or not... I was walking through the fish section in a pet store a couple of weeks ago and saw an irridescent shark in a 55g tank, in the bottom rack. The poor guy was all bunged up from little kids tapping at the glass causing him to panic and run into stuff. He was a drop from some idiot that had him in a 75g with a ton of other extremely large fish, so he's all scarred up. I went home and did some research and decided to try to give him a better home. He's in a 125g with a gourami for company. Tonight when I went down to feed him I noticed some spots on him I hadn't seen before. I'm not sure wether these are scars I just hadn't noticed before, but I'm terrified he's got ich, (already rediculously attached). The gourami in the same tank seems perfectly normal... would ich be really obvious or is there any way to test for it? also any other info on him would be really helpful... most of the info online either says what great pets they are or says it's cruel to keep them so im having trouble finding anything that tells me how to care for him well.