My betta fish has black tail ends. Is it sick? What should I do?

Question

I’m wondering why my beta fish has black ends at the end of its tail is it till right should I bring him in what am I supposed to get for my beautiful Beta fish . It’s tail is black and edged I clean his tank really good once a week I’m not sure how he got this it was kinda black on his tail when I got him and it has gotten worse. Pet's info: Fish | Betta | Female | 10 days old

Dr. Massimo Orioles, DVM, Cert AVP, MRCVS · Accepted Answer

Although a picture would help to determine the underlying cause, this problem would require a quite radical approach. Begin by submitting a water sample for quality testing. Most pet stores will do this for free or a nominal fee. Clinical examination should always include a water quality check, even if you have done so already. Water testing should be performed with a quality test kit, measuring NH4, NO2 and NO3. High ammonia levels, PH imbalances may be responsible for these signs. Oxygen concentration and quality of the filters should be determined as well. If water quality is good and there are no major imbalances, your fish should get examined to look for any sign of bacterial/fungal infection and eventually water should be treated. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

My betta fish has black tail ends. Is it sick? What should I do?

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