Stingrays tail looks nipped

Anyone have an experience with their rays tail being nipped, or looking like it has a fungus on the very end of it. My ray looks as if about 1/4 of an inch of color has been taken off his tail. The tail is there but looks like the color is coming from around the bone or something. Where it was once black, it now looking white on the tip. He shares a tank with anotehr ray, tig, blk bar silver dollars, nothing threathing it appears. Eats well, but the tail is a concern now. Water par appear to be fine, and I jsut did a cycle today and added salt.
What is a proven medication for fungus and where to get it from. I have nothing here but petsmart and they only carry pimafix and melafix. What are the pros using and where to rush order some from? Until then I will keep doing 20% water changes daily and adding a 1/2 cup of salt. (125gal)
Thanks in adavnce

bcfd144 said:

can you get a picture of it?

Click to expand...

There are pic posted, maybe after you looked.
I feed daily at least 10 worms two shrimps and a few mass pellets. They are both aggressive when it come to food so I lure them on each end of the tank for feeding.

Hey Brent'
Yeah had me up all night worried, but after a good water change and a little salt, woke up this morning and he was looking fine, in fact the tip must have come off, because he look normal again. . pouncing on worms, shrimp, and mass pellets.
I'll assume the tail will grow back with age, correct?

It's all good then!