Re: [Killietalk] Fry size comparison?

[LeeH920226 at aol_com]

Well, I have not measured them, but I can usually predict from the size of 
the egg, which I have measured. The error in this comparison arises from the 
effect of premature or delayed hatching. In either case the fry is smaller than 
the potential size. The potential size is approximately as long as the 
circumference of the egg. Since I have measured many egg diameters I have put together 
a prediction chart, based strictly on the approximation that the maximum 
length of the fry will be close to the circumference which I have calculated from 
the diameter. Here is an abbreviated table.

Species                                         Diameter (mm)   Fry length 
(mm)
Nothobranchius (Fundulosoma) thierryi Ghana             0.85    2.67
Epiplatys annulatus                                         0.90    2.83
Simpsonichthys costai                                   0.92    2.90
Nothobranchius foerschi                                 0.95    2.98
Epiplatys dageti Monrovia                                   1.05    3.30
Simpsonichthys costai                                       1.10    3.46
Aphyosemion australe strain #5                          1.24    3.88
Aphyosemion bitaeniatum  Ijebu Ode                      1.25    3.93
Aphyosemion cognatum Bandundu                           1.25    3.93
Fundulus chrysotus                                      2.40    7.54
Gnatholebias zonatus Ficha BBL 01/06                        2.48    7.78
Gnatholebias hoignei Papalon BBL01/03                   2.50    7.85
Lamprichthys tanganicanus                               2.50    7.85
Rivulus species Paragua                                 2.50    7.85

Lee Harper
Media, PA

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