I have had my tank 6-8 months now with just harlequin rasboras in as it was previously used for goldfish but they were moved to a larger tank and the rasboras upgraded to this 100l . They have been fine no problems at all . So today I decided to increase the amount of rasboras to 9 and add a few platys on the recommendation of the pet shop who said they would get along fine. Well they seems to I watched them for a while after introducing and the platys were mingling and exploring and all the rasboras were doing well. But after a couple of hours all the platys went into diffeent hiding spots and won't come out at all . They've been there now for 6 hours . Is some thing wrong water tests for ammonia. Nitrate and nitrite show ammonia is up a little but not quite 0.25 so I'm planning another water change in the morning but don't want to stress them by doing one too soon all other readings were fine Is this normal for newly introduced platys ? As the shop owner said they weren't a shy type of fish. I hope they all survive the night or my kids will be devastated .
