Petshrimp.com Discussion Forum

Hi all,

commonly is claimed that decapod crustaceans inlay calcium to their armours. I read in some doubtful literature source that shrimps are exception. They don´t do it allegedly. Thin and translucent molts indicate it. What do you think about it. What say your literature sources? Thanks.

Do you know origin of the animals?

Thank you for your contributions. Today I found one molt of H. rubra after long conscionable seach. It is good sign to breed them! http://www.akvakrevetky.wz.cz/rubra.jpg http://www.akvakrevetky.wz.cz/rubra2.jpg http://www.akvakrevetky.wz.cz/rubra3.jpg http://www.akvakrevetky.wz.cz/rubra4.jpg

Hi,

I have 58 specimens of this species two months. I never saw any exuvia. Is it normal? How often your animal shed? Thanks.

Thanks for explanation and illustrative photo. I´m sorry, but it seems to me somewhat impractical-small capacity and laborious. For clening and water change I use garden hose with net. If I use mesh with small gaps I save shrimps but I don´t suck off debris. If I use mesh with big gaps I suck off de...

Hi bludusty,

thanks, but I don´t know what is turkey baster even if I use dictionary. Can you explain it?

Hi all,

does anyone know some save method how to remove debris from aquarium water, but no shrimp juveniles? Thanks for your tips.

Some potentially interesting extracts from science papers about H.rubra and their habitat. Bailey-Brock JH, R.E. Brock. 1993. Aspects of the feeding, reproduction and sensory biology of the Hawaiian anchialine shrimp, Halocaridina rubra Holthuis (Atyidae). Pac. Sci. 47:338-355. : „Salinity of the po...

Hi all, maybe Opae ula needs salinity fluctuations for regular and successful reproduction (tide influence ?). Stable salinity (whether high or now) is not good. Or Opae ula needs salinity gradient in its environment, where animals find correct salinity to fit to specific ontogenetic stage or fyziol...

How many species exist in Halocaridina genus? Are all opae ula in our tanks the same species?:

http://www.auburn.edu/~santosr/pdf/Craf ... Poster.jpg

Opae ula natural densities: "The abundance of Halocaridina rubra in the Sailor's Hat pool is low. In most anchialine systems, H. rubra is one of the most common species with densities exceeding a thousand individuals per square meter of substratum (Brock, unpub. data). It has been hypothesized ...