Wounded/ sick tetra

[Doitforthefish]

Any idea on what this could be? For a little background, 29 gallon tank with 4 orange rio von tetras (fire tetras). These were the first fish and only to go in the tank as to not overload it immediately. They have been in there approximately 2 weeks now. The levels in the tank are all pretty good.
One of the fish has a fleshy wound to the rear of the body. Can these fish do that type of damage to one another? One of the fish is very large and dominant compared to the others (constant nipping, chasing other fish). The wound appeared over night which leads me to the above mentioned possibility.
If parasitic/bacterial or fungus any ideas? Fish is still eating fine. No behavioral changes.


Thanks for the help

 

[EmbersToAshes]

It looks like a small bacterial or fungal infection. It was probably caused by a small wound from nipping becoming infected. If it where my fish, I would keep an eye on it for a few days and see if it heals on its own. Make sure you keep your water parameters good to promote healing. 0 ammonia, 0 nitrite, and under 20 nitrates.

I can't tell from the pic if it's bacterial or fungal. Is it possible for you to get a slightly closer/ more focused picture?
If you want to use a medication, I would use something mild since it is a small infection. I wouldn't use antibiotics/antifungals unless it gets worse or doesn't heal on its own.
I would use Melafix and Pimafix together in this case since I'm unsure if it is bacterial or fungal, and it's probably actually both anyway. I have had great success with these meds. They are natural and not as harsh as many other meds if used as directed. However, some people don't like them and some tetras can be very sensitive. There are also many other natural remedies you can try to add antiseptic and/or antifungal properties to the water. Indian almond leaves are one.

 

[Doitforthefish]

Thanks for the reply, Emberstoashes. It appears to have gotten a little better today. I’ll just keep an eye on it as you suggested, maintain the water quality and hopefully it will take care of it’s self. I’ve included a few extra pics. It’s really hard to get a focused picture.

 

[EmbersToAshes]

Good pictures, it looks like a bacterial infection to me. Can't say for sure what kind, but it looks like a typical minor infection. hopefully it will continue to heal on its own.