Petshrimp.com Discussion Forum

I did not say that the defect is caused by the environment. I do not think so. Defects like that occur all the time. However most time they result in embryos not able to live. It is just a lucky coincidence, that the defect has affected the pigment cells and not an important inner organ. However the...

These things happen, however they are not genetic usually, but a disorder in an early stage of the shrimps development. I personally once had a orange dwarf crayfish with a clear carapace, but an orange tail, a black tiger shrimp, which was only black on one side and a red bee x black bee mixed shri...

I am not sure, if selective breeding will help much. It is not unusual for Neocaridina shrimp of all colors that their coloration changes with their mood. In general adult females are the most colorful. Especially for the blue pearl shrimp for example is true, that females will turn pale, once they ...

There is a whole strain of Neocaridina shrimp called "white Okayama shrimp" who has this kind of parasite. Shrimp, mostly the males turn white after a while and can live quite a long time in that condition. An apparantly quite stable relationship between parasite and shrimp has been establ...

I think that diet or even parasites might be a more likely reason than minerals.

Well, there is several people who have already bred them (who have them longer than I have). I would not say that shrimp from these lakes are very difficult to keep or breed. Breeding any type of shrimp with a larval stage is way more difficult. In my opinion they are just different. They have diffe...

It is a diffent species that is breeding. It is very small, only 12mm and very shy. I did not manage to photograph them yet. I am sorry, I got confused in my post above. Depicted is the Kardinalsshrimp of course. I mixed it up with the Harlekinshrimp, C. cf. spongicola. It is those that died. The Ka...

Keeping and breeding the shrimp from the ancient lakes of Sulawesi is not that difficult. All they need is a pH about 8 and a temperature of around 27°C. Getting them is more difficult however, as they cannot stand low temperature not even for a few hours, or they will die. This is not the Kardinals...

I think food is responsible for egg color. Happens to other shrimp and crayfish, too.

thanks a lot, that does help. I will look for it.

Just curious. How can you measure 1ppm nitrate? The tests available in Germany have a lot wider scales, like in steps of 10ppm. And 10 is already difficult to tell apart from 0.

Actually it is vice versa. Shrimp come from the sea and some managed to adapt to freshwater. First by having larvae that do not need salt and more adapted species by going through their larval stage, still attached to the female.

Are you sure that you do not have a snowball shrimp and C. simonii? There are some sellers in Germany, that sell "Caridina simonii" and send a crude mix of different Neocaridina species, even A, desmaresti and only if you are lucky, there are C. simonii in there, too. From the shape of the...

They should not be kept together as they will interbreed and you'll end up with a tank full of mutts. Whats the big deal? It is one species after all.... Even selling red critters as red cherries of that brood is actually not fraud, as red is recessive and red ones will only have red offspring. May...

red is a recessive trait, yes.
Ramshorn snails can also store sperm for a long time. You can learn that if you breed different color types of them. While red, blue, pink, green etc usually breedes true, you will get other colors for quite a while if your snail had contact to snails of other colors.