Platy and swordtail fry

[Rinzy]

I have platy and swordtail fry. The swordtails are a month old and the platys are two weeks old - some of the swordtail fry don't look like they are growing - should I cull the runts? They are now smaller than the platy fry. Also, there are a couple platy fry in my main tank that I couldn't get out but they seem to be fine - but their color is a lot more vibrant than the ones I have separated - any reason for that?

 

[Rinzy]

Anyone?

 

[gabysapha]

Im not sure how fast swordtail fry grow. Did you try googling this? They may just grow slower than platties, so they may not be runts at all. I don't have experience with swirdtails though.

 

[Rinzy]

It's not all of them - I have 10 swordtail fry that are good size - about 3/4" long and the rest that were born the same time are smaller than the platies that were born 3 weeks later

 

[ocminpin]

I have this situation with my Mollies... Some are TINY!! My older ones are 1"- 1 1/4" and the few runts are 1/4-1/2" mayyybe... I'm stumped also!!