Hi,
I haven’t posted in forever but someone sent the URL to this thread to me saying it was linked to my LJ. As for the crabs with painted shells, as long as you don’t paint it while the crab is in it, they’re fine. When they select shells they will actually choose the brightly coloured ones over the natural shells. Their vision isn’t that good so I guess the bright colours attract them. I just got two myself, they were in fact impulse buys from a touristy gift shop down in the seaside town of Galveston here, but I read a book that was provided about them before I purchased them, and have been doing much research on their proper care since I got them home. My pair are in natural shells, just because I like low-key and the painted shells would clash with my room decorations… even my pair of bettas have natural-coloured decorations in their tanks. But the painted shells don’t hurt them and isn’t cruel to the crab at all.
Granted these guys may not be much up on the evolutionary ladder higher than goldfish, and probably a lot of them do die shortly after getting home, but if properly cared for then can live up to 10-20 years (from what I’ve read). Mine are tiny because I wanted to have them a long time. Unlike spiders and scorpions and such, they’re very tame, and the more you handle them the better (as long as you’re careful). About the only time they might pinch you is if you try to mess with them while molting, or you’re holding them and they become afraid they might fall. Right now one of mine has already decided to molt, probably because I took him from the huge community tank and gave him much more privacy… he is buried in the sand of my tank beneath their driftwood ornament…and my other crab is crawling around on my desk between my arms as I type this.
I brought my crabs home and they live in a substrate of sand that I spot clean every couple days and will have to clean completely once a month. The eat FMR hermit crab food, the best brand, with a mix of FMR hermit crab treat, which is made of papaya, coconut, and some other tropical fruits. They are mostly nocturnal, which means they get cranky sometimes if you play with them in the daytime, but at night they shuffle around swim and munch on their seasponges and choya wood and other treats. The crabs you see in the mall and gift shops are freshwater land crabs. They’re not the same ones you see on the beach, though they look almost just the same. There are two major pet species and the most common one doesn’t need salt water at all. These crabs do not have any kind of scent at all, and I have one of the most sensitive noses of anyone I know. Maybe if you let their tank get really, really dirty… but that would be mildew and such you were smelling, not the crabs.
All they really require is a clean tank, a soft substrate to live in, clean, treated tapwater sponges and daily misting (both of the crabs to keep their gills wet, and the sides of the tank to keep the humidity up) and some food and choya wood and seasponges to knaw on. When they get bigger I’ll mix some special calcium supplimented sand in with their regular sand, to help them form their exoskeletons in bigger molts… but… that’s about it. Oh, and lots of extra shells.
So I hope the info helps, and I don’t really like the assumption that just because a pet is an impulse buy, or because it has a painted shell, that it necessarily won’t be well cared for.