Shrimps & Snails Eating Dead/dying Fish?

Back on the shrimp theme - but with a different question this time.

Tank No.2 has been mentioned a few times, with the amber/green light being pretty much green now . However, I'm inclined to agree with my OH that a nano-sized tank is more realistic in such a small abode, which of course would not be large enough even for the micro species which still require at least a 45cm-long tank, and so am thinking about a shrimp-only tank.

A few possibly daft questions:
* I seem to recall reading that shrimp have a tendency to go walkabout and so the tank would need to be very well-sealed - am I correct?
* Does anyone have any experience of these https://uk.hagen.com/Marina-360-Cool-Desktop-Aquarium ? They look a possibility, there's one at a reduced price in a LFS, and they're not ridiculously/disproportionately expensive like some other nano-sized tanks. (Obviously, I would need to check if its lid is 'open' or can be covered, dependin on the answer above.)
* Is it possible to 'sex' shrimp in the LFS, and would a single-sex shrimpery work, so that not over-run with babies?

That tank is do-able provided the filter is sensible, ie not too strong for shrimps (150 litre per hour is 15 times tank vol per hour  ) and has sensible media (ie not just a carbon cartridge).
But I'd prefer something a bit bigger.

How big is the available space?



It is possible to sex shrimps provided you know what to look for. The easiest shrimps are cherry shrimps which come in a few different colours now though the red ones are easiest of the colours. Cherry shrimps have been selectively bred from brown wild ones, and yellow, blue etc are even more selectively bred with resulting delicateness (if there is such a word).
Any shrimp that has what look like berries (eggs) between the swimerets is female. Any shrimp that has a saddle shaped mark on its back is female (eggs swelling the ovaries). That will account for some of the shop shrimps.
males have a flatter underside to their abdomen, females are curved as they have to be able to carry eggs. Males are paler than females.

Shrimps mainly go walkabout if their water is not to their liking. They don't like any ammonia or nitrite or high nitrate. If you can provide the water they like they should stay in the tank, though the odd one may go wandering just because it can.
They usually climb cables to get out.

If you can provide the water they like they should stay in the tank, though the odd one may go wandering just because it can. They usually climb cables to get out.

  Oh my days!! My 55l future shrimpery is escapable if thats the case!!

Sue you know you said wild cherry shrimp are brown...my clear shrimps in the 200l are apparently colourless cherry shrimp, according to the guy in MA. Also how brown are wild cherry shrimp? I ask because I picked up 2 CS from another shop and by comparison to my bright red ones, they do look brown

Fiona, there's photo of a wild cherry shrimp on here. I too have shrimps so pale they are almost colourless rather than brown. I wonder if that's due to the selective breeding that was used to create the red line, maybe they bred another colour out so when there is insufficient red they look colourless.
And there are different grades of red cherries - 'plain' red cherries, fire red cherries, sakura cherries, bloody mary cherries etc etc. The pricing of them tends to be the redder the more expensive.

fcmf, one thing to avoid is mixing the colours of cherry shrimp as they are all the same species and will produce muddy coloured offspring if they breed.

I've just realised there is a whole page on wild cherry shrimps on that site here