My two goldfish have been happy in their new 125litre tank for the past couple of weeks but a few days ago my black moor started to stay in the top corner of the tank. He'd swim for a few minutes but always ended up back in his corner.
The past two days he's been hiding under a rock in the tank but comes swimming out happily enough if I go up to the tank and he's still eating whenever food goes in. Occasionally I see him swimming about but mainly he is sitting under the same rock.
I have been doing 30% water changes every day due to a nitrite spike which is finally going down. There is 0 ammonia, nitrite is 0.3 (nutrafin liquid test kit) and the nitrate is going up as the nitrite goes down. It has a filter for 800litres and the fan tail is nearly 2 inches with tail but the black Moore is an inch and doesn't seem to be growing much. I have put aquarium salt in which cheared them up for a day but not now they have 2 air stones too. What's wrong with my fishy ? I'm rather fond of him and just want him to swim around like the fantail.
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SnipSnapCrashCrack · 23/08/2015 17:12
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