Good morning!
I've gotten into the habit of buying dinner at a convenience store, and the number of items and the total amount are gradually increasing.
I can't be satisfied with the same stimulation anymore!
I'm the tooth decay angel.
Well, unlike guppies, I have a long history of raising southern marsh shrimp (Caridina leucosticta).
If I may be so bold as to say, I have a few opinions of my own.
Southern marsh shrimp are also creatures that are extremely compatible with Mini-earth.
If you just throw in a few aquatic plants, it seems that they can breathe and eat.
To be honest, they can survive and even reproduce even if you don't know what they usually eat.
Even if you put aquatic plants and southern marsh shrimp in an aquarium together, you can't tell from casual observation that the plants are being eaten.
It is generally believed that they eat dead parts and "new shoots", but at least I have never observed them eating "new shoots".
Even if you put the shrimp in the same place as aquatic plants, the plants will grow without any problems.
Perhaps there are bacteria attached to the surface of the aquatic plants or their dead parts, and there are protozoans that eat these, and the shrimp gather them up and eat them, bacteria and all.
That's my interpretation.
The requirements for this water plant are very low for the southern marsh shrimp, and it seems that a small amount of moss is enough for oxygen and nutrients.
In the past, there have been successful cases of keeping them alive for about a year and a half on a small bottle of whiskey.
The main role in the 1-ton Mini-Earth "Biocube" is the guppy.
The southern marsh shrimp are expected to:
(1) Supply some of the baby shrimp as food for the guppies.
(2) Promote the decomposition of the feces of various creatures.
(3) Clean the moss that has grown on the walls.
However, southern marsh shrimp is actually quite mysterious.
In the world of aquariums, in most cases, shrimp found in rivers and ponds are roughly divided into gour types: long-legged shrimp (Macrobrachium), striped shrimp (Palaemon), Yamato marsh shrimp (Caridina multidentata), and southern marsh shrimp (Caridina leucosticta).
Seriously, many people may think that only these four types exist.
Striped shrimps are not usually sold at aquarium shops.They are sold under the name of Moebi at fishing tackle shops.
Most native shrimps sold at aquarium shops are either southern marsh shrimp or Yamato marsh shrimp .
Southern marsh shrimp and Yamato marsh shrimp are completely different in size and shape, and Yamato marsh shrimp cannot breed unless salt water is prepared, so they can be clearly distinguished.
By the way, as for these southern marsh shrimp , even if you buy them in bulk from a breeder through a shop, the shape varies quite a bit depending on which store you buy them from.
It seems that in the aquarium world, except for those who are very knowledgeable, the current situation is that all species which live in Japanese freshwater, are omnivorous, and are not crayfish, long-legged shrimp, striped shrimp, or Yamato swamp shrimp, are simply lumped together and called "southern marsh hrimp" by a process of elimination.
I also usually refer to the shrimp that I collect by rummaging around with a fishing net as southern marsh shrimp (even when I look up detailed websites, it is still difficult for me to identify the actual shrimp!), but my collection is a jumble, with some that I caught where I nearly drowned in the main body of a first-class river, some in a small irrigation canal, and some in places that are almost brackish.
Referring to a detailed website and looking for all the possibilities of "freshwater shrimp in Japan", academically, it seems that it could be various different kinds of shrimp such as the Mizore marsh shrimp (Caridina leucosticta), Nuka shrimp (Paratya improvisa), Himenuma shrimp (Caridina serratirostris), and Togenashi marsh shrimp (Caridina typus).
Most of the shrimp sold in Japan under the product name "southern marsh shrimp (Neocaridina denticulata)" are "Chinese marsh shrimp (Neocaridina davidi)" or a related species, which is said to be an introduced species, but recently, due to release, "Chinese marsh shrimp" are commonly seen in Japanese rivers, which makes the situation confusing.
Furthermore, if these are capable of interbreeding, it would be completely unraveling.
So far, shrimp carrying eggs and baby shrimp that appear to have been born inside the "Biocube" have been confirmed, so there is no doubt that at least a "reproductive population" has formed among the shrimp.
The remaining mysteries of classification will be solved little by little.
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