A lab strain that is still going on...

[emeraldking]

Poecilia reticulata
Lab strain "Istanbul", Dzwillo 1959

 

[GamerGoldfish2]

What is this?

 

[emeraldking]

What is this?

This is an old wild lab strain used for research and collected from the wild by prof. Dr. Michael Dzwillo.

 

[davros]

Given the number of students that must been involved in the keeping of those fish I am astonished that the strain has been kept alive that long

 

[emeraldking]

Given the number of students that must been involved in the keeping of those fish I am astonished that the strain has been kept alive that long

If you think this is a long period, there's also a wild lab strain called "Smaragd iridescent (Emerald iridescent) 1927 (my dad's birth year) that goes way back to 1921. They were collected from the wild by danish Professor Øjvind Winge (the endler was renamed after this biologist by Fred Poeser, Michael Kempkes and Isaäc Isbrücker) in 1921 and were used for research purposes starting in 1927. I also have a population of this specific lab strain at home.

I also have to conclude that after such a long time of inbreeding, no disformities has shown up thusfar. If I compare this to other wild guppies populations I've been keeping, the same story of no disformities is in order. From this all we can conclude that the more wild genes in a fish, the more stronger they are in comparison to longterm inbreeding in breeding forms. We seem the same thing happen with other wild livebearer species.