They're what I would consider moderate to moderately easy pets but just grabbing one out of rubble and tossing it in an aquarium without even knowing the species is a terrible idea and it will almost certainly die of either your ignorance, how long it will take you to get it a proper set up and most likely pure shock from not being a born captive animal.
Instead if you want one spend some time researching it to figure out it you even want one as a pet, have the means and desire to care for it, research which species is best for you, assemble it's environment and THEN acquire the animal itself ideally from a decent pet store, breeder, or at a reptile/insect expo.
They're neat and I understand the desire to keep this one but trust me it isn't a good idea.
