Some clown babies missing ventral fins?

[Tetra84]

I'm approaching day 30 on about 35 clown fry that I managed to raise. Overall they seem very healthy.. developing nice color and eating well. However, I'm also noticing that a handful are missing one or both ventral fins. I expect its probably because they're pecking at each other? Or maybe a mutation? If that's the case, can I expect that they will regrow these fins, or are they lost forever? Anyone else experience this?

 

[FraggledRock]

probably aggression.but mutation is very possible too

 

[Tetra84]

I suspect aggression as well based on what i've seen. My bigger question is will they regrow..

 

[Betta132]

They should regrow if not bitten completely down to the base, I'd say. Just keep them healthy. If they're biting, maybe they need more hiding spots or more space?

 

[temper76]

Do you know the lineage of your pair? ? How many generation? Could be to much inbred

 

[ThRoewer]

What species are they?
If they are Premnas (maroons) you need to separate them or they will kill each other.