What makes fish balloons?

[Andy02793]

I always wondered what makes a fish a balloon fish like a balloon texas or balloon fh. My not so lfs has lots of them in stock but I wanted to know what they were first before buying them.

 

[COG Commando]

Are you asking what the difference is between them and a regular breed, or how they got that way??

 

[Andy02793]

How they got that way.

 

[COG Commando]

Typically people use selective breeding to bring out certain genetic characteristics, I'm sure thats the case with these fish as well.

 

[joe jaskot]

Many balloon fish are deformed hybrids.

 

[JenTN]

They breed them to have bent spines.

 

[Aquatic Aggression]

It is a spinal abnormality.