Gourami sick please help

Bruce

Small Fish
May 11, 2003
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Toronto Canada
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#1
first off i have a 65 gallon tank. it has been set up two years now.all the water test are fine.i have 2 gold Gouramis 4 blue gouramis 6 clown loatches 2 angel fish
2 red rainbows. One of my blue gouramis looks like he cant control his tail fins?? he eats every day.and he swims around sometimes. he just sits on the bottom most of the time.and it looks like his back has a funny shape. his tail fins point DOWN. any help would be great