Help blue tang

slipknot23

Member
can some one tell me what this red thing on the side fin is??? I will get some more pics soon I hope some one can help me Thank you
 

lion_crazz

Active Member
Hm, kinda hard to see. More pics would be helpful, for sure.
How is the fish acting? Is it still eating aggressively?
What are your water levels (ammonia, nitrite, nitrate, pH, kH, temp, salinity)?
 

lion_crazz

Active Member
No, it is most likely a bacterial infection. That is what happens most times when the fish has reddening fins and body.
 
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