viewtopic.php?t=877
Another Website update
Moderator: Mustafa
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chlorophyll
- Shrimp
- Posts: 218
- Joined: Wed Feb 16, 2005 1:22 am
- Location: Hawaii - USA
Good stuff. The locals around the Caribean don't call that macrobrachium anything?
There are sure a lot of medium sized macrobrachium shrimp with the one big claw on males. Makes me want to go catch some local ones (M. grandimanus) to keep. Unfortunately I don't really have the space to set up a new tank just for them. I suppose like most hobby aquarists I could always MAKE space somewhere..
There are sure a lot of medium sized macrobrachium shrimp with the one big claw on males. Makes me want to go catch some local ones (M. grandimanus) to keep. Unfortunately I don't really have the space to set up a new tank just for them. I suppose like most hobby aquarists I could always MAKE space somewhere..
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GunmetalBlue
- Shrimpoholic
- Posts: 263
- Joined: Sat Apr 16, 2005 11:10 am
- Location: CA
Mustafa, it's nice to see the sex differentiation of both species listed.
On the Macrobrachium faustinum, the female's rounded carapace covering the pleopod area is quite pronounced, along with the difference in their claw size.
Concerning the Bamboo filter shrimp, I finally did see a male Bamboo at the store and am more convinced I have two females. I've still not experienced any change of their color though. My brown-ish one has stayed on the brown side while the orange-ish one has stayed reddish-orange. I personally find that they can greatly vary the intensity of their color, but haven't found a transition from their original colors - possibly because I got them as adults? I'm wondering if dominance or genetics issues have some additional role in their colors...
Hope one of these days we'll have an opportunity to see a picture of a female Atya Gabonensis too.
-GB
On the Macrobrachium faustinum, the female's rounded carapace covering the pleopod area is quite pronounced, along with the difference in their claw size.
Concerning the Bamboo filter shrimp, I finally did see a male Bamboo at the store and am more convinced I have two females. I've still not experienced any change of their color though. My brown-ish one has stayed on the brown side while the orange-ish one has stayed reddish-orange. I personally find that they can greatly vary the intensity of their color, but haven't found a transition from their original colors - possibly because I got them as adults? I'm wondering if dominance or genetics issues have some additional role in their colors...
Hope one of these days we'll have an opportunity to see a picture of a female Atya Gabonensis too.
Get rid of the bed - that'll make room for 10 more aquariums right there! What with all the shrimp-watching, you won't have time for sleep anyway.chlorophyll wrote:I suppose like most hobby aquarists I could always MAKE space somewhere..
-GB
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chlorophyll
- Shrimp
- Posts: 218
- Joined: Wed Feb 16, 2005 1:22 am
- Location: Hawaii - USA
Hey, I just happened to make contact with a hobbyist online who said he had A. gabonensis females with eggs. He sent pictures (none with eggs though) and I'm asking him if he has more pics and if I can post them online.
My own gabbies need to grow bigger, but his pictures give me a little more hope that one of mine is a female. Seems to be that females *do* have a quite pronnounced first pair of walking legs, just that the males' are thicker.
I'm skeptical that they can really be differentiated easily when young, and mine are young, at 4-5 cm.
My own gabbies need to grow bigger, but his pictures give me a little more hope that one of mine is a female. Seems to be that females *do* have a quite pronnounced first pair of walking legs, just that the males' are thicker.
I'm skeptical that they can really be differentiated easily when young, and mine are young, at 4-5 cm.
It would be nice to get a picture of an ovigerous female. Then it would be easy to once and for all see what the distinguishing features (i.e. first pair of walking legs and carapace features) between the sexes are.
Young A. gabonensis should be pretty hard to distinguish between the sexes as you have suggested.
And yes, I also think that the first pair of walking legs of the female in A. gabonensis are probably pretty thick and much thicker than those of Atyopsis moluccensis.
Young A. gabonensis should be pretty hard to distinguish between the sexes as you have suggested.
And yes, I also think that the first pair of walking legs of the female in A. gabonensis are probably pretty thick and much thicker than those of Atyopsis moluccensis.