0 + 4 = ?  
Input the result from the expression
Maximum attempts you can try: 10

Re: White bubble on danio’s mouth!

Subject: Re: White bubble on danio’s mouth!
by fcmf on 5/11/2019 13:56:58

What a great photo and lovely fish.

Is the fish behaving and eating normally? How are the water readings for ammonia, nitrite and nitrates?

This thread https://www.fishkeeping.co.uk/modules/ ... 29910&keywords=lip+bubble is interesting and possibly similar - read it through completely from start to finish, particularly the aspect about whether you've made any water changes recently with particularly cold water.