Jan writes:
...and then there is always the possibility of hybridization and natural
variation in the other poecillids.
Sailfin mollies with "marbled" pigmentation are pretty common in peninsular
Florida but I am curious whether "marbled" sailfins are frequently seen in
the exotic populations in which genetic variation should be lower (from
"founder effect") and perhaps envcironmental influences that promote
melanism are different.
Previously on this list, we discussed the similar pigmentation in F.
chrysotus. Marbled individuals are common among populations of peninsular
Florida, but I believe they are either rare, non-existent, or unreported on
others.
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