white tips on fins, very odd w/ picture

[LT1FirebirdSLP]

pH 7.2
Nitrates 20
Nitrites 0
Ammonia 0
Temp 78°

Tank is fully cycled with 1 pleco, 1 large snail, 1 baby tiny snail, 1 ghost shrimp, 2 zebra danios, 10 black phantom tetras

Some of these tetras have had this for a long time.

I don't know what it is? Why are there white tips on their fins? Are they sick? Are the fins healing? Just trying to make sure my fish are healthy!

Thank you in advance.

 

[darkmule27]

They're totally normal on serpae tetras and are one thing that distinguish them as serpaes versus other tetras in the same genus. No need to worry!

 

[JPKeenan]

they actually look cool how do they get along in a community tank?