What graphics card do the machines that exhibit this problem have?
Are you using copyentity to create copies of the fish - perfectly valid technique but there was a bug involving 'copyentity' and certaind nvidia cards with particular drivers (ie latest) where meshes appeared all 'stretched' and 'distorted'. Supposedly this was fixed somewhere between 1.88 and 1.90.
For more information have a look at the entries in the blitz3d bug forum section relating to 'copyentity' - you may have to go back and look at old bug reports that have been deemed to be 'fixed' or not a problem any more...
Are you using copyentity to create copies of the fish - perfectly valid technique but there was a bug involving 'copyentity' and certaind nvidia cards with particular drivers (ie latest) where meshes appeared all 'stretched' and 'distorted'. Supposedly this was fixed somewhere between 1.88 and 1.90.
For more information have a look at the entries in the blitz3d bug forum section relating to 'copyentity' - you may have to go back and look at old bug reports that have been deemed to be 'fixed' or not a problem any more...