Raven wrote:he had alot of discolouration which i noticed 2 hours ago and half an hour ago i saw him get undressed

first time i se ashrimp do it in action.
Next time, you should avert your eyes and give him some privacy.

How's he getting along now? Hope he's settling in nicely.
but my question is.
how can i see if the shrimp dislikes being in my aquarium ?
how can i see if he likes to be in my aquarium ?
Those questions might be too general, but to try and answer, basically, we as shrimpkeepers can try to match what can be known about a particular shrimp's preference - and try to provide something similar - and hope it makes them happy.
Very generally speaking, if they seem to spend most of their time picking around (or in the case of filter feeders, filtering around) for food, shows normal range of coloring, is willing to reproduce, etc., then they are probably okay.
Conversely, if they spend their time either not doing anything at all for long periods (other than molting), or if they are crashing around the tank as if they want to get out, then there's probably a potential problem. Also, there are situations where even though the shrimp isn't outright distressed, it may not necessarily mean it is in an optimal situation.
Let us know if/when you have a more specific question or problem; hopefully someone can better help you then.
-GB