Pickles Posted June 8, 2016 Report Share Posted June 8, 2016 HiI'm quite new to the wonderful world of fish. We have 5 small fantails in a 65 litre tank. 4 appear healthy and happy but the fifth spends a lot of time at the bottom of the tank. When s/he does swim the tail appears quite rigidly splayed in a 's' like shape. He'll swim to the top for food, only to be thrown around by the current (which the others cope well with since we changed the filter), then nosedive back to the bottom. He doesn't swim for more than half a minute to a minute at a time.I have been doing 10% changes and testing weekly. The levels were good until I missed changing the water over the long weekend so I changed 20% but ph and ammonia are still a little high. However the fish has been like this since we moved from the 15 litre tank into this one. Any suggestions please?!Thanks Quote Link to comment Share on other sites More sharing options...
livingart Posted June 8, 2016 Report Share Posted June 8, 2016 It may have some mechanical damage, ie: to its spine causing the rigid tail Quote Link to comment Share on other sites More sharing options...
Pickles Posted June 8, 2016 Author Report Share Posted June 8, 2016 that doesn't sound good. This is a video of it https://youtu.be/viBohAxz6ME Quote Link to comment Share on other sites More sharing options...
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