Keyhole Fins Missing

[mark4hay]

hi i have a 200 litre tank ammonia nitrite 0 nitrate 40 i have got 6 red eye tetra a sailfin molly a german blue ram and last week bought 2 small keyholes yesterday when the lights came on one of the keyholes has a fin missing and a bit of the tail fin. this morning when the lights came on the other keyhole has a fin missing now as well he was fine yesterday any ideas what this could be?

 

[Graphic5]

try and watch whats happening when the lights are off, see if the fins are getting bitten off.

 

[mark4hay]

i have tried to watch as much as i can but thats the strangest thing from what i can see none of the other fish go anywhere near them

 

[kaivalagi]

Could it be the keyholes attacking each other? You need to watch their behaviour more closely to get an idea I think

 

[mark4hay]

yeah i have been thinking that too but from what i can tell they seem fine with each other in the day both usually close together no signs of aggression

 

[kaivalagi]

fish can have very differing behaviour during the night, maybe turn the lights off early enough to get a view of things for a while. Alternatively do you have a friend with a suitable tank you can temporarily place one of the keyholes in for a bit to see what happens?

 

[mark4hay]

fish can have very differing behaviour during the night, maybe turn the lights off early enough to get a view of things for a while. Alternatively do you have a friend with a suitable tank you can temporarily place one of the keyholes in for a bit to see what happens?

ill try that tomorrow night see if i can see anything happening ill try to make another cave in the tank tomorrow as well only have 1 n there atm but it is heavily planted so i thought there would be enough hiding spots i dont know anyone who would take it for a while