Tank mates:
Stars & Stripes puffer 10", snowflake eel 12", GSP 3.5", Wrasse 3.5", Lawnmower Blenny 3"
Elvis' tail had a halfmoon black spot a few days ago. It went back to yellow for about 2 days. This morning it was there again, this afternoon it got larger and now it's fraying. Is this fin rot? If so how do I treat it? Or what do I treat it with?
I looked up fin rot and it says white fuzzy fraying fins. Not the case here but wondering if it might be something else.
He is still in hypo, sg 1.009, amm. 0, nitrite 0, ph 8.2, nitrate 10





