Finnage question

[Hybridfish7]

I noticed golds/crossbacks generally have significantly shorter pectoral fins than reds. Is this a locality thing or just the fact that breeding lines don't focus on fin length? Can golds and crossbacks have the same long pectorals as reds?

 

[ryanmfk]

i've seen a XB with super long fins, i think this all depends on the breeding line/genes