Tanks 6-11, Tank 10 was a winning fish and is in the other thread.
This guy was just an unhappy fish...
Tank_6 by Pat Husband, on Flickr
Tank_7 by Pat Husband, on Flickr
Tank_8 by Pat Husband, on Flickr
Tank_9 by Pat Husband, on Flickr
Tank_11 by Pat Husband, on Flickr