Just nu finns det Potamalpheops sp. räkor (som Purple Zebra räkor) på Akvarietekniks stocklista. Vill bara påminner alla att dessa räkor kräver bräckt vatten !!! De ser fint ut men de dör i normalt sötvatten. De behöver 8-15g salt/liter.
Menar du att dom som vuxna behöver saltvatten för att överleva eller är det larverna som behöver det?
De vuxna djur behöver bräckt vatten.
Tack, bra att veta, ska göra i ordning ett kar till ett litet gäng:D
Har börjat fixa med det i går kväll redan, sen är det bara att hoppas att de har räkor kvar när vattnet mognat:D
Lite info om dem , ifall någon vill veta mer. Texten hämtad från planet invert
Purple Zebra Shrimp
Potamalpheops sp.
Overview
The Purple Zebra Shrimp is a very cool looking shrimp but unfortunately it is really not a viable shrimp to keep in captivity. They do not breed in freshwater, are relatively small, and hide most of the time. It is a nice shrimp to keep as far as its appearance but do not expect much else unfortunately.
Background
The Purple Zebra Shrimp was first introduced to the hobby in 2006 and originates from Asia. Virtually all specimens are captured in the wild and exporters of this species are locals who catch them in the thousands. Captive breeding has not been reported to date.
Water Parameters
I have housed the Purple Zebra Shrimp in many different parameters. This species can live and successfully hatch eggs (not reproduce though) in a ph ranging from 6.6 to 7.4. Temperature can also very from 72F all the way to 82F. This species is not as delicate as some may think, it is rather hardy. A healthly specimen can live in multiple conditions. The main reason why this species is considered delicate is due to poor capture and export. Since the Purple Zebra Shrimp comes from the wild poor shipping procedures and handling can easily damage this shrimp, making it certain for death.
Breeding
The Purple Zebra Shrimp require saltwater in order to successfully hatch as larvae and develop into minature adults. The Purple Zebra Shrimp start as tiny larvae floating in the water. The female carries many bright green eggs for approximately 3 weeks and then hatch into tiny larvae floating freely in the water. The larvae are almost completely transparent. They are extremely small and look like little pieces of glass floating in the water. It is actually a really cool sight. The photo below is of a free floating larvae.
Unfortunately after about a week the larvae are no where to be found. I have checked the moss and substrate many times to no avail. I have had many larvae at different times with the same result each time: no offspring. It is unknown whether they die of starvation or a lack of saltwater, could be both. Another photo below showing a free floating larvae.
Sexing
Sexing the Purple Zebra Shrimp is not an easy task as the usual sexing rules of larger females with curved underbellies does not apply. The Purple Zebra Shrimp is a very small shrimp. Adults are a maximum of just over 1/4" and therefore sex can only be distinguished by either a green saddle or green eggs on the female. It seems that this shrimp reproduces like clockwork though. Females either have a saddle or eggs at all times. I do not believe that there is any other way to sex this species without either eggs or saddle. Males and females seem to be the same size. Blow is a photo of a Purple Zebra Shrimp female with a tell tale green saddle.
Feeding
The Purple Zebra Shrimp is definitely not a picky eater and will eat anything from blanched spinach, zucchini, algae wafers, shrimp pellets, fish flakes, bloodworms, and more. Feeding is best done once a day. Only feed an amount of food that the shrimp can finish within 2-3 hours maximum. It is not good to feed in excess and have food sitting for too long. Overfeeding is a known cause of death and can also cause water quality issues. Remember that shrimp are scavengers in the wild. They will eat whatever they find and are not used to a constant food source 24/7. Not feeding for one or two days is fine and will not harm this species at all. Sometimes I will not feed for a couple of days in order to let the shrimp cleanse their systems and keep the water clean at the same time. Photo below of a Purple Zebra Shrimp eating an algae wafer.