Arched back but otherwise seems healthy?

[Singerk]

My little golden axolotl Dicer is about two or three inches in length and seems healthy, she has her little hides hole and quite a few aquatic plants she likes to hide in. She is a voracious eater and sometimes gobbles up a little sand but seems to pass it ok and I've started feeding her on her feeding platform (she only eats sand if it smells like food) my only question is her back started to arch a few weeks ago and it's not like she's got her tummy curved up her actual back has a large arch in it. Why is this? Any insight would be helpful thanks!

 

[Petersgirl]

Is there anything she might have smacked it on or caught it on by accident? Any large ornaments or something she may have fallen off? It may be this. Axxies can repair their bones so it may fix on its own.
I was thinking that it might be MBD (Metabolic Bone Disease). You can find information on that here :Axolotl - malnutrition, nutrient deficiency, Metabolic Bone Disease (MBD)

What is she usually fed, and how often?

 

[Singerk]

She doesn't really have anything bump worthy and the top is covered. She eats bloodworms and brine shrimp (both frozen) and some fish pellets on occasion. She eats daily or every other day. I hope it's not mbd :/

 

[Petersgirl]

I hope so too, MBD can be quite hard to diagnose though. There are quite a few axxies who were just born with little kinks or quirks that might look like they have MBD and don't. I hope yours is one of them.
Your axxie does have variety in their diet, but have you considered Earthworms? I hear they're very nutritionally balanced. If you can get them it may solve the problem, especially if it isn't a straightforward tank bump.

 

[Mortimer]

My first thought was MBD, as well.

 

[Singerk]

Is there anything I can do for mbd? She's still pretty young so would a more varied diet help? Or extra vitamins? What kind?
Thanks for your guys input I really want my girl to have a long happy life