Get a fighting fish... just needs a glass of water... very nice to look at and they only need the water changed once a week... also as long as it doesn't have another fish in the same tank it is fine... two fish in the same tank though and you find out that its name ain't to stave off comments about its beauty.

My one that I had in Sydney was a azure to deep blue scales... whenever it was feeding time I would hold a small mirror up to the tank and it would open its mouth, puff up its fins and get into a defensive posture (reminded me of linemen)... anyhow it learned after a while that it would get fed whenever it got into its fighting stance (as long as it had not been feed recently) and it would start doing so when it was hungry... it would also eat the fish food off the tip of my finger.