when i came in from work tonight alice, my pregnant molly had passed away. she was pregnant. she looked normal except her top fin looked a bit shredded but this was not the case this morning as i had a good check at them all this morning as i recently added a new fish. i think perhaps she injured it, or more likely it happened after she passed away and had been rubbed against the wood by the current or something
water paramenters are amonia 0, nitrite 0.8 mg/l, nitrate 20 mg/l and ph 7. i dont know where this nitrite has come from, i check pretty much weekly and it has been stable at 0 for a while until 2 days ago when i tested and got these reults. also, the only thing different was that last night i added nutrafin plant food at the stated dose for my tank but this says it is safe for fish.
any ideas what might have ended her life? should i worry that my other fish will have the same fate? all my other fish are doing well at the moment but like i said, so was alice this morning so im worried for them
as for the nitrite, i did a 30% water change right away to reduce it