I have never understood why do they sell shrimp eggs in numbers but not weight (on Ebay). No one is going to count, so i guess you should really ask them how much grams it is , and calculate how much feeding its going to give to your fishies. This all comes to you as you take the experience and learn how much to feed the growing batch.
Actually you should ask the hatch-rate of this shrimp eggs, some have 75% hatch-rate , some have 95% hatch rate (the good kind), the 95% one is the one you want to buy, you dont want to spend all day going through hatching the bbs and see only 75% hatched and rest are just eggs sitting there.
And About Notho eggs , not all are going to hatch even if they are 300 in your package. I got 100 (2 packs of 50) and I really delayed wetting them because I had no time here and got some serious issues to deal with, but after wetting them TWO MONTHS pass their hatch date, I still got 25+ fry out of hundred, i am sure if i had done in time, I would had got more than 50-60 fry (it would had been impossible to keep them all and would had been forced to sell , another headache.
So even if they are 300 eggs, don't fret on counting, they are really tiny and need trained eye to even see some. the eyeing of egg or golden rings are not that clearly visible too (this is when they will hatch if wetted) that too takes magnifying glass to see.
The sellers actually must go by estimate, they count how much a female lays egg in the week, this is when they pack the peat to dry etc. and then keep that as guesstimate. This is what i feel because that's what i will do too if i have to save eggs.
In my killifish tank, I have seen female lay 5-10 eggs at one time(during the spawning ritual). the eggs flew up in water during spawning activity and i roughly counted , now i know if i keep a peat in container and this same female keeps entering daily for week, she alone will give 50 eggs approx in single peat container, which I can store to in humid condition. if i have to sell 300 ,I will simply pack 6 packets of collected peat like this. BTW , i havent seen this and dont really know will they really give eggs daily, but all males are totally active to spawn and some big females dont mind the males take them in the activity, some females are really small.
I am sure the really experienced and ready with tools breeders might be inspecting the peat to microscopically count eggs.
