Shrimp gender

badflash · Post by **badflash** » Sat Mar 24, 2007 6:45 am

Amanos are very active compared to cherries, and quite agressive when it comes to food. I suspect that they stress out the cherries to some limited extent and this reduces the reproduction. I get babies, just not as many as in my amano-free tanks.

MikeR · Post by **MikeR** » Sat Mar 24, 2007 3:52 pm

I understand. What size tank is this, and how many of each shrimp are in there?

Mike

badflash · Post by **badflash** » Sat Mar 24, 2007 6:16 pm

It is a 10 gallon tank. Pprobably 12 amanos, 6 greens, and maybe 20 RCS.

MikeR · Post by **MikeR** » Sat Mar 24, 2007 8:39 pm

I should probably start another thread, but perhaps this won't go far...

I notice that you have two different genera, and that the two shrimp of the same genera have different life-cycles. Is that intentional? I think I read here that you should avoid two shrimp of similar species in the same tank, correct? The shrimp you have in the same tank would not be able to cross, if I recall the articles written here correctly. Is that why you picked that particular population?

Thanks,

Mike

badflash · Post by **badflash** » Sun Mar 25, 2007 5:05 am

MikeR wrote:I notice that you have two different genera, and that the two shrimp of the same genera have different life-cycles. Is that intentional? I think I read here that you should avoid two shrimp of similar species in the same tank, correct? The shrimp you have in the same tank would not be able to cross, if I recall the articles written here correctly. Is that why you picked that particular population?

There is no chance that amanos and green shrimp will cross. Their life cycle is too different. The amano males also have never shown and interest in the green shrimp females. Housing them in the same tank was just a matter of convenience. I knew they would not interbreed, and I didn't see any harm in putting them together as they all enjoy the same water parameters. The amanos are the ones I'm trying to get zoes from and my salt water tank is right next to them.

I am sure that in the future Caridina will be broken up into several genera. Maybe Mustafa can shed some light as to why such different seeming shrimp would be lumped together.

MikeR · Post by **MikeR** » Sun Mar 25, 2007 8:19 am

Bad:

Yes, that was my next question: Why are the amanos and the greens in the same genera given their different reproductive sequence? I seems to me that if they have physically zero chance of crossing, they have little or zero chance of being in the same genera.

I was wondering about the thought process you used to decide to put those shrimps together and your explaination is how I thought you'd thought

.

Thanks!

Mike

Neonshrimp · Post by **Neonshrimp** » Sun Mar 25, 2007 9:47 am

Why are the amanos and the greens in the same genera given their different reproductive sequence?

When the shrimp were assigned their scientific names it was based on morphology rather than life cycles/environment/interbreeding. Therefore they used the shape of the body (in particular the position of the antenae) of each shrimp to assign names.

MikeR · Post by **MikeR** » Sun Mar 25, 2007 10:52 am

Neon:

That has been my understanding, which is true of many creatures. As a better understanding of the animals is made, sometimes the names are changed. Many creatures look the same, but end up being entirely different genetically.

Mike