Corbidorbidoodle Posted October 13, 2022 Share Posted October 13, 2022 I have some Harlequin Rasboras in a 44 tall, 80-82 deg. Nitrate less than 10 Nitrite 0 Gh 300 Kh 40 -80 Ph 6.8 No chlorine I just noticed a few of them have a little white spot on their mouths 1 Link to comment Share on other sites More sharing options...
Chick-In-Of-TheSea Posted October 13, 2022 Share Posted October 13, 2022 (edited) Possibly columnaris. In some fish the mouth is affected. Don’t quote me on that though. Edited October 13, 2022 by Chick-In-Of-TheSea Link to comment Share on other sites More sharing options...
Colu Posted October 13, 2022 Share Posted October 13, 2022 white lumps or spots on there mouth can be a sign of columnaris you can get these spots on the mouth with neon tetra disease it can affect rasbora barbs danios angelfish if it's columnaris you want to treat with kanaplex and Jungle fungus clear fizz tab's containing nitrofurazone following this treatment plan 1 Link to comment Share on other sites More sharing options...
nabokovfan87 Posted October 13, 2022 Share Posted October 13, 2022 Keep an eye on behavior also. They can get those from trying to graze on sharp hardscape. It happens, could be a one time thing, but something to note behavior and make sure that fish is able to eat and such. 1 Link to comment Share on other sites More sharing options...
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