Amano Shrimp Eggs

[Wolfenrook]

The chap who wrote the article I linked to found that more survived when the lights were left on 24/7, finding that he lost more zoes if the lights were turned out. Worth considering.

Ade

 

[SunnyP]

I've done a recount and found there are about 25. Even better!!!

Also about the comment about a better chance of survival of the zoes if light is on 24/7, how would this work in the wild.

Is it the same in the wild??

Would the shrimps only breed during periods of the year when there is only shorter period of darkness??

 

[a1Matt]

25! 8) Thats great.

How many do you think there was originally?

 

[Ray]

The chap who wrote the article I linked to found that more survived when the lights were left on 24/7, finding that he lost more zoes if the lights were turned out. Worth considering.
Ade

From the article:

Given the size of the larvae, no need for a lot of water, so my small 5L (1 gallon) acrylic tank is largely enough. This tank is full of seawater at 33/34ppm salinity in which I cultivate marine phytoplancton alagae Dunalliela Salina. The light necessary for the phytoplancton is provided by a small 15W fluocompact lamp. Any kind of fluorescent lighting will do, mine is a standard 2700K for domestic use. The light has to be kept on 24/24hrs, or else, for reasons as yet unknown, a significant number of larvae die if you switch it off at night.

Seems to me that the phytoplancton will reproduce 3x as fast it you light them 24*7 - should make food easier to come by for the zoos?

I'm not a specialist - where do you get marine phytoplancton?

 

[Wolfenrook]

I'm pretty sure it's usually sold as artemia food, you could try Liquizel as well as sold by Hobby.

As to the light, some of it could be that it stops the zoes from settling out of the water column, which would be achieved in nature by the greater depth of the water column and the strength of the currents, in addition to the additional food issue.

Ade

 

[Brenmuk]

How long do amano females carry their eggs?

I have 2 females that seem to be heavily ladened with eggs for the last 3 months - do they stay like this or will they drop em in one go?