Are designer clownfish more likely to die early?

[Tavero]

Inbreeding is associated with shorter early-life telomere length in a wild passerine - Conservation Genetics

Inbreeding can have negative effects on survival and reproduction, which may be of conservation concern in small and isolated populations. However, the physiological mechanisms underlying inbreeding depression are not well-known. The length of telomeres, the DNA sequences protecting chromosome...

link.springer.com

Telomere Length Correlates with Life Span of Dog Breeds

Telomeric DNA repeats are lost as normal somatic cells replicate. When telomeres reach a critically short length, a DNA damage signal is initiated, in…

www.sciencedirect.com

https://www.pnas.org/doi/10.1073/pnas.1902452116

All things being equal shorter starting telomere length shows a correlation to shorter life in several species. MOA is debated but end result not so much.

Thanks for the info. I will check it out when I have time.

 

[Tavero]

For people that want to dive a bit deeper into genetics I can recommend this video and it's mentioned scientific papers.

A lot of mendel gene rules only apply if the organism was heavily inbred before. Meaning your school books are extremely simplified.

To get back to topic: The chance that designer fish die because of tank conditions or missing evolutionary pressurre is a lot higher than some random inbreeding gene defect.