Common Name: Red Cherry Shrimp
Scientific Name: Neocaridina Davidi
Size: > 3cm
Neocaridina comes in a large variety of shrimp types with the most common being the Cherry Shrimp. Cherry shrimp are very hardy, this makes them a great choice of shrimp for someone just starting out in the hobby.They originally came from Taiwan but are now very widespread across the world and should not be hard for anyone to find. they are extremely easy to breed and maintain and are often known as a bomb proof shrimp because they can live in conditions that would be considered too extreme for other shrimp.
I have as an example unknowingly transferred young Cherry Shrimp into tanks that have never been cycled and done almost 90% water changes in them which for most shrimp would be too much, they also have another huge bonus they literally breed like rabbits. As a starting brood, I’d recommend buying a minimum of ten shrimp to start with.When buying shrimp always ask other people for recommendations on sellers, look across forums and groups and ask around about seller reputation you can of course always buy locally which in many cases will end up being cheaper for you and safer.
Aquarium Tank Size
The bigger the Aquarium better but you get what you can afford, the benefits of larger tanks are water stability which is key with shrimp but they can cost so much more to buy. Most people tend to have smaller planted nano tanks which are ideal for cherry shrimp.
My own rule of thumb is to never buy a smaller tank than say a 20 Gallon but this is just for personal preference.
My personal favorite substrate for Neocaridina and certain types of Tiger shrimp is plain old sand or gravel which the shrimp love to sift through and forage for food.
I prefer river sand because of its nice balanced color which suits aquariums.
To wash it all you have to do is place it in a bucket of water and stir it up with your hand, repeat this process and empty out the dirty water.
You can also use pre-washed gravels like pea gravel but don’t ever pre-wash an active substrate it is not required
You should also use a minimal depth of 3cm in all of your shrimp tanks this is because different bacteria have different needs and some of them are light sensitive, take aerobic bacteria, for example, they require little to no water movement and some species require complete darkness.
Substrate choice is of pure preference so do your research and ask questions in forums.
All living things need energy from the sun to create a food source so unless you live near a thermal vent 4 miles down in the depths of the ocean you are going to have to provide your shrimp with some type of aquarium light , I recommend anything from 8-10 hours a day. The light needs to be in the 6000k daylight range for two reasons, you can use a lower 4000k light but this will make the tank and the shrimp look orange, lights like this will often be marked as warm so you want to avoid these ..on the opposite end of the spectrum you could also use 10,000k lights but in a freshwater setting they don’t look natural, people think of the sea as being blue so this is where marine tanks look great under a higher kelvin of light. The other reason is I think most plants do well in the 6000k range, it also looks natural.
Aquarium Water Preparation
This will be the single most important thing in deciding whether or not you will be successful at keeping Shrimp.
Water Is the giver of all life and it is important that you understand that what is safe for you might not necessarily be safe for Shrimp.
Typically our drinking water can contain elements such as chlorine and fluoride which are deadly to Shrimp so we have to remove them.
By far the easiest way to do this is to use a water conditioner like Seachem Prime
It is also very important that you age the water you are going to use for at least 24hrs, this is to let the water heat up and also allow the pH to stabilize. Tap water under pressure in your pipes contain millions of tiny air bubbles this increases the Ph of the water.
As an example, the pH of the water straight from my tap is 8 if I leave it to age and degas it drops down to 6.5 after 24hrs.
Add the substrate of your choice and add your filter I recommend a small sponge filter with a small powerhead for small tanks but you can also use other filtration methods like hang on back filter and canister filter
In an ideal world, I would use 2-3 canister filters in a chain with a double sponge filter on the intakes of all my tanks.
When your tank is the ready start to fill it with water and prepare it like I showed you in the first section of this guide.
Add a pinch of bacterial powder if you have it, I like to use Borneo wild enlive and BacterAE
Next, sit on your hand for a week and then do a 25% water change again remember to age that water.
Repeat these steps for two months.
After 2 months your tank should be cycled.
Now is a good time for you to break out ammonia test kit and see what you have, I personally don’t do this anymore because the tanks are always ready but it is good practice for you to see it for yourself.
Let me touch briefly on why the cycle process is important.
A shrimp tank needs a stable nitrogen cycle to function properly and in the early stages it is anything but stable, bacterial colony’s will thrive and die of as they compete with each other for the resources your tanks hold, this is why I recommend starting with a bacterial powder so that you choose the type of bacteria.
Bacterial colonies can also take a little while to get going and some anaerobic bacteria can take a longer time than normal.
Aquarium Temperature 22-24c
The best temperature for Cherry Shrimp IMO is 22-24c, they can live in higher temperatures but you will see a higher mortality rate and shorter life span, breeding shrimp can be a balancing act of what is best for the shrimp and how to get the optimal growth breeding rates without it having detrimental effects,
A great example of this is egg hatching, the warmer the water is the faster the eggs grow but the percentage of surviving young shrimplets will be less, you also have to remember things like oxygen levels decrease as water gets hotter and also bacteria counts get higher which also effects mortality rates.
Does temperature affect sex the sex of the shrimp? I have no concrete evidence on this either way just my observations but I do know that this is true in crayfish so here are my thoughts on this matter.
In nature during a wet season the fresh water will flow into the waterways lowering the water temperature, this effect signals the optimum conditions for all creatures living in the water to reproduce and breed.
If there is lots of food and an influx of freshwater the population will grow faster, hence why the female shrimp are favored on the lower side of the optimal scale, think of it this way lots of females produce lots of baby shrimp and conditions like oxygen demands will be more suitable for young animals.
When the water is warmer the shrimp will still need to breed but they have to do so at an equal ratio probably a 1-1 this ensure both sexes will always be available to mate.
Another interesting concept would be do temperature changes during egg gestation affect the shrimp in any way?
Can it change color like it does in many reptiles like Python’s and Alligators as an example?
Do I then need heater ? This just depends on where the tank will be situated, if your home is roughly above 20c most of the time you will not need a heater in the tank. If you live in hotter areas you will need to figure out a way to keep the tank cooler, a very common method is to have a fan blowing across the surface of the tank, the can lower the temperature by a few degrees..if you still can’t get the water cold enough you may consider buying an aquarium chiller
Aquarium pH >6.8
Let’s start by identifying what the abbreviation pH means.
pH stands for potential hydrogen.(lots of people also state this as potential hardness) so pH is a measurement of the hydrogen in the water, the more you have the harder your water will be.
Shrimp Tank pH is measured on a scale between 0-14, 0 would be very acidic while 14 would be very alkaline, while a ph of 7 would be neutral.
The pH scale for Red Cherry shrimp ought to be slightly on the hard scale and range from 6.8 and up This variable can maximize health, color and egg hatching rates.
I note that they do well in tanks that have large rocks and plain gravel this could be from mineral content leeching out from both ..things like lava rock are ideal.
As with nitrite, ammonia must always be as close to zero as possible after the cycle period which should be two months.This is to give your shrimp tank time to build up a proper nitrogen cycle.All shrimp in general like most aquatic life are highly prone to toxic poisoning if ammonia is present in a tank.
Aquarium Nitrate < 5ppm
Adding plants to the fish tank and doing constant water changes are great ways to reduce nitrate levels. higher than 20ppm shrimp are vulnerable to nitrate poisoning. I like to keep mines under 5ppm and adjust this through water changes and adding a very small amount of fertilizer as required
gH means General Hardness
This is a measurement of Calcium and Magnesium.
The more you have of these two the harder the water will be.
kH means Carbonate Hardness from the German Karbonathärte
This is a measurement of the buffering capacity of the water.
With an active substrate you don’t need to worry about kH but if you are on sand or gravel you should have some kH value as this will stop your talk from having pH swings which could kill your shrimp.
There are many buffers on that market that would be suitable for cherry shrimp and any good standard aquarium buffer will do, you can also use things like crushed coral or oyster shell egg shells and even cuttlebone from cuttlefish
They will slowly dissolve allowing some kH to stabilize the aquarium.
Whatever you do choose just remember to give the items a good wash and rinse If you use eggshells wash them under warm water and removal all of the protein layers from the inside.
Aquarium Water Changes
25% – 1/4 every week.
Solution to pollution is dilution (STPID) stupid
Think of your tank as a living thing it needs pollution from organics and other elements removed but it also needs other materials replaced and replenished.
The first step is to ask yourself about your water source is it tap water is it Reverse Osmosis water is it well water?
If it is tap water it is in your interest to use some type of dechlorinator to bind harmful elements together until your tank has time to deal with them ..Prime is my go to but there are other.
Aging your water also helps reduce the shock of doing a water change this is because fresh water straight from the tap has a very high PH this is because its under mains pressure and full of oxygen. all aging water is, in a nutshell, are you letting the water sit in an open container for 24hrs before using it, I like to use a small powerhead in my container to give the water movement.
I personally notice an increase in vigor and growth while doing larger more frequent water changes why I can’t say for sure but to hypothesize the less an organism has to do the more energy it has to put into growth, if your shrimps immune system as an example is not fighting off large excessive bacterial counts in the tank then it can concentrate all its efforts into say reproduction.
Acclimating the Red Cherry Shrimp to the Shrimp Tank
The best thing to do is place your new shrimp into a large bowl and then take an appropriate length of silicon tube to make a siphon from the tank to the bowl, flow restrictors can be used here to adjust the water flow to 1-3 drips per second.
Remember you are in no rush to do this and it’s in your shrimp’s interests to take your time. Once 1.5 hours have passed your shrimp will be ready to go straight into the tank.Also, remember to use a timer so you can keep an eye on the acclimation progress.
How often do Cherry Shrimp Molt?
From my observations, adult cherry shrimp in good condition molt every 3-4 weeks which coincides with the gestation period of the young shrimp. Younger shrimp molt much more frequently and very young shrimp can molt almost every other day.
Why do Cherry Shrimp Molt?
Shrimp are invertebrates meaning they don’t have a skeletal structure like we do on the inside, a shrimp skeletal structure if you will call it that is on the outside of its body, for it to grow it has to shed its old shell and replace it with a new one, a good way to think of this is like your fingernail growing, as you cut the old nail away a new one is ready to grow into its place.
What is very important in a shrimps life is that it always has enough minerals and vitamins from good fresh foods so that it has everything it needs to complete the molting process. Poor diet can lead to failed molts and underdeveloped eggs that take a much longer to hatch.
Why does that matter ? as I mentioned before female adult Cherry Shrimp will want to molt every 3-4 weeks so it is very important for them that the eggs are ready to hatch at the best times..a delaying in molting will cause stress and you will notice this as her color starts to fade.Which will eventually lead to the female shrimp’s death? I hope you are now starting to see the coloration between good food temperature and reproduction.
If you do have a dead female you can save the eggs if you find her soon enough, you are required to remove the eggs with a toothpick and place them in a net near moving water. Check the net every other day and remove any eggs that have started to fungus up, also make sure the net is high enough that snails cant climb into it or they will eat the eggs.
Feeding Red Cherry Shrimp
Shrimp are what I would call detrivores, this mean that they eat decaying plant and animal matter, they sift through detritus with their little hair cover claws which I think look like eyelashes, in essence, what they are doing is sweeping food into their mouths, this is very evident on large fan species of shrimp.
Feeding Cherry shrimp in the correct tank setup is very simple, they typically will consume 70% of food from the tank itself (This is why macronutrients dosing can be of help) in the form of biofilm, algae and other microfauna.
The Rule I have always used is to add a small amount of food to the tank and watch the shrimps reaction ..if they all rush to it and eat the food you are doing well however if they sit back and hide then there could be a problem with overfeeding and poor water quality.
The solution as always would be to cut back on the food, Once a week you should also feed a bacterial product to the tank to keep the bacteria number up which the shrimp also benefit from in the form of food and clean water.
Best foods are spinach kale and nettles but you can also give them other green foods, I will leave a video below on feeding shrimp but shrimp should be fed no more than they will eat in 2 hours and then remove the rest.
Can you keep shrimp and fish together?
Shrimp, in general, are best kept in individual tanks where the owner can look after there needs, Tanks, where fish are present, are a problem because all fish will predate on Shrimp of all sizes, as a rule, I say the two do not go together.
Breeding Red Cherry shrimp
Breeding Cherry Shrimp is very simple if you follow the guidelines show above and is more of a collection of a lot of conditions being good for them than any one thing I could write down here..clean water at the correct temperature and good food go along way to helping shrimp breed.
As a conditioner to get my shrimp producing more baby shrimp you can once a week feed them a high protein food, for this I like to use bloodworm.
If you have feed them properly and given them a good balanced diet they should be ready to breed at the 3-month-old stage, female cherry shrimp will have a bright green or yellow saddle in the back this is where the eggs are stored after being passed down from the overies , after a female has molted a male will mate with her, after aproxematly 3 weeks at 23c the young should be ready to hatch out, the females at this time will often go and find a nice dark spot to hide while she releases the young.The young after being born are very small and tend to be stationary for the first few days but they will move to find food.. shrimp at this age molt a lot as I mentioned in the above section until they are adults which takes roughly 2 months.
How many cherry shrimp should I buy?
Typically you should give yourself the best chance of success by buying a good number of numbers to start with ..10 is a very good number for a few reasons, The first is shrimp do like to hide in the beginning so its better for your viewing pleasure to start with more than less.
Another common statement I see a lot is people declaring is that they have all the same sex !! 99% of the time the shrimp are just to young to see any real difference.
A secondary problem can arise from buying to little shrimp and overfeeding, In my opinion, tanks with a good number of shrimp start out better than those with just a few in it.
This is because the more mouths you have to feed the less chance there is of you polluting the tank by putting too much food in.
So how do you sex Cherry Shrimp?
Cherry Shrimp are very easy to sex a ripe female will be large and ether have a saddle (think like a horses saddle) in its back that can range from bright green to bright yellow or be berried, berried is a term we use to describe the female holding the eggs in the belly region. Males, on the other hand, can be very clear in comparison, smaller and be more streamlined, I like to think they are made this way be able to swim faster. This is evident when a female has molted because you will see the shrimp dance as the males search the entire aquarium for that female that just molted.
There is a chemical called chitin that is released as a female starts the molting process that drives the males into a frenzy, after the female has molted a male will seek her out to mate with ..its not uncommon for females to be harassed to death at this point as they are very vulnerable so please provide them with some hiding places and a few floating plants.
Depending on the temperature you should be able to see baby Cherry Shrimp in 3-4 week. Do not worry if you see nothing because they are very good at hiding and more often than not you will have lots and lots of tiny Red Cherry Shrimp In the tank. After being born cherry shrimp will often be tiny see-through versions of their parents. do not worry if you don’t see a lot of them in the beginning, they start out life at just under 1mm in size. Young shrimp at this age tend to molt a lot so it is important that you feed them a powdered food such as Pure Nordics Nutridust or BacterAE, If these are not available, you can also use organic pollen.