Just got home to my Goliath African tiger fish floating .I got the fish from Wes about 3 weeks ago ,a perfect fish . It has been eating like a horse and is relatively tame now . It was floating upside down not a mark on it or a scale missing . water quality is perfect even the oxygen content. plenty of current and no fish in the tank other than it has anything wrong with it.There is also a U/V sterilization unit on the tank as well. Guess it ran into the wall.??? Have kept Hydrocynus sp. since the early 19 nineties and this is the first one that has ever died on me for no apparent reason. I just don't understand it . The lights were off and nothing to spook it.Well, Wes I guess I need another GATF with perfect jaw structure from you if you've still got any more. Dang this sucks. Not knowing is worse than watching it get bit in half it seems like. Thanks for letting me vent. Any ideas people. I have the best equipment money can buy and then some.Twenty plus years of experience with the genus. Also no live food from me. Frozen or pellets. Ate like a hog last night. Better than ever. I just wanna cry. Zach