Well, I decided to change the look (plants/gravel/rocks etc.) of my 37 gallon so started a bit of work tonight, and had to stick my arm in above elbow to get at things like the bubble wall and thats when THEY attacked. Has everyone heard of the shows like "when Animals Attack"? I have 6 tiger barbs and they could be the inspiration for these shows! They went after my arm - especially around elbow and I was surprised at how much they could pinch me! They made the gravel vac a battle too - kept trying to go after the end so they could get sucked up too! Couldn't believe how non timid they were! Even my black skirt tetras and zebra danios gave me little kisses - although at least they didn't try to taste me! Only the neons seemed to have brains - they kept their distance at least! Any similar experiences?