Tropical Fish Keeping - Aquarium fish care and resources

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-   -   fiddler crab questions (

mathguru 07-14-2007 07:55 PM

fiddler crab questions
So I got this fiddler crab from the ol' LFS the other day... I like him a lot. He eats a lot of detritus and makes them into these little balls. Anyway, I'm trying to figure out a way for him to get some air occasionally... he's already climbed to the top of my large sword a couple of times and stuck his head out of water... but then he falls. I'm thinking of putting a little rope ladder up to a floating piece of drift wood? (I know if I do that I would have to make sure he can't escape). Does anyone else have a lot of experience with fiddlers?

Lupin 07-14-2007 08:37 PM

The fiddlers are better off in a paludarium. They are brackish water invertebrates and will need a portion of the land, not just water.

mathguru 07-14-2007 08:55 PM

I do keep the tank slightly brakish to discourage ich. I'm trying to figure out the best way I can give him access to air. I've read about several successes in keeping these crabs in (almost) fully aquatic environments for up to two years... and I've read about a lot of failures. I think the key is in keeping the water at the right salinity that the other fish can tolerate and that will make the crab happy... and also providing a way for him to have access to the air. Any suggestions on giving him access to air? If he sits on the driftwood that's right under the powerfilter, he gets bubbles on his body... can he get air that way?

Lupin 07-14-2007 09:01 PM

What fish do you have with the crab? Most fish will not tolerate the increased salinity. Why not just set up another tank for the fiddlers themselves rather than trying your luck with a fully-aquatic tank? You can slope the substrate to allow a portion of it exposed from the water. Some slates will help to prevent the substrate from seemingly eroding and flattening out.

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