Can Crystal Red and Cherry Shrimp Go Together?

It is one of the most common questions among both new and experienced shrimp keepers.
The answer is:
Yes, it works - but it is rarely the best solution.
Crystal Red (Caridina) and Cherry Shrimp, also called Neocaridina, are peaceful and will not harm each other. The problem is instead that they thrive best in different water values.
If you want both species to do well, grow and reproduce, it is usually better to keep them in separate aquariums.
In this article we go through why.
Two different species with different needs
Although both are dwarf prawns, they differ quite a bit.
Crystal Red (Caridina)
Crystal Red originates from Caridina cantonensis and thrives best in soft and slightly acidic water.
They are often kept together with active soil and remineralized RO water to create stable water values.
Cherry shrimp (Neocaridina)
Cherry shrimp, such as Bloody Mary, Red Sakura, Blue Dream, Blue Velvet, Yellow and Orange Sakura, are significantly more hardy.
They work great in regular tap water in many places and are therefore a very popular choice for beginners.
The difference lies in the water values
This is where the big challenge lies.
Crystal Red works best with:
• pH: approximately 5.8–6.8
• GH: 4–6
• KH: 0–2
• TDS: about 100–140
Neocaridina usually thrives best with:
• pH: approximately 6.5–7.8
• GH: 6–12
• KH: 2–8
• TDS: about 180–250
There is some overlap, but no aquatic environment is optimal for both species at the same time.
What happens if you keep them together?
They often survive.
But that doesn't mean that they thrive optimally.
Common consequences are:
• Worse reproduction
• Fewer surviving fry
• Slower growth
• Increased stress in the more sensitive species
• More failed attempts
It is almost always Crystal Red that are affected the most as they are significantly more sensitive than Neocaridina.
Can they mate with each other?
No.
Crystal Red and Cherry Shrimp belong to different genera.
Crystal Red is Caridina.
Cherry shrimp are Neocaridina.
They can thereforenot crossedand you don't have to worry about hybrids.
This means that the colors in each species are preserved even if they go together.
When does it work anyway?
There are aquarists who keep both species together.
It usually works best if:
• The aquarium is well established.
• The water values are close to an intermediate position.
• The temperature is stable.
• There is a lot of moss and hiding places.
• The aquarium is large enough.
Even then, you often have to accept that one of the species does not develop as well as in a species aquarium.
What do we recommend?
If the goal is to just enjoy the shrimp, in many cases they can work together.
But if the goal is:
✓ Healthy prawns
✓ Strong color
✓ Regular reproduction
✓ High survival of fry
then we recommend keeping Crystal Red and cherry shrimp in separate aquariums.
This way you can give each species the water values it actually prefers.
A better option
Many choose instead to have:
A Neocaridina aquarium
with for example:
• Bloody Mary
• Blue Diamond
• Blue Navy
• Yellow
• Orange Sakura
and a separate one:
Caridina Aquarium
with for example:
• Crystal Red
• Crystal Black
• Blue Bolt
• Black Panda
• Pinto
This provides significantly better conditions for both groups.
Conclusion
Crystal Red and Cherry Shrimp are peaceful with each other and cannot be interbred.
The real problem is not their behavior – but their different demands for water.
If you want to give both species the best possible conditions, we recommend two separate aquariums with water adapted to each species.
Then you get healthier shrimp, stronger colors and a significantly greater chance of success with reproduction in the long term.


