How about this beauty
http://www.liveaquaria.com/diversden/ItemDisplay.cfm?c=2733+3&ddid=97721&cm_sp=rss
Need a very large tank and a dissolved oxygen meter before trying one of them. Certainly doesn’t fit in a 90 full grown. I personally think their tank size minimum is very far off, but then again if they had it at the right level they’d probably sell less.