Cave Tank?

[x5tr41ghtj4ck3t]

So, I was watching some youtube videos on animals that live in caves.
It is interesting because most have evolved to not use light (because they live in caves..) I was wondering if it's a plausible idea to make a "cave tank."

An idea might be to make an entire cave section out of styrofoam and have some sort of low-light LED's embedded into it so that the inside could be viewed (like maybe blue LED's). The entire tank would could have the maze-cave look, or it could have a part "underground" and a part above ground. Now obviously they don't sell cave animals at pet shops or online (or do they?), so an environment like this would be suitable only to local cave-findings, and of course that spawns the question of "what else are you putting in your tank that you don't know about?" But honestly, does this sound like even an interesting idea? Something worth thought?

[evilhorde]

Here is a fishtank I put together a while ago. On the right is a pile of lava rock with a submerged pump at the bottom of it. The idea being that the rocks would provide me with a good surface for all the beneficial bacteria I could need.
On the left is the HOB aquarium filter hastily set up inside the terrarium after the submerged pump system failed. Now, if I didn't have that filter in there right now I would try covering the 'deep end' with some glass or plexi and burying it. That would give me a lot more crab land than what I have now.



The plexiglas sides make this setup crab escape proof. Here is a picture of the 'island'.

If I wasn't so lazy I would put up a current picture. Stinging nettle has completely taken over the tank. All of the contained space above the aquarium is densely packed with nettles. It is VERY dark in the tank despite the twin T5 HO daylighters blaring down on it.
I should get that bad weed out of there but I figure if it grows so damn fast it must be pulling a ton of fish waste out of the water and the red claw crab seems to like eating it. That and the stuff scares the hell out of me.

I'm just rambling now. Anyway, that would be one easy way of creating a cave.

[1.0gecko]

If you can execute the plan you said it would work great!
IMO try this:
An aquarium, what size and shape do you want? I'd personally do a cube in the 25-60g range (18 x 18 to 24 x 24), if you can/want a DIY one would work great!
I would recommend a dark brown or gray color for the cave, make it come down, but leave most of the mid section dark sand or gravel.
The only "cave" fish I know of being commonly sold are Cave Tetras, Astyanax mexicanus/Astyanax fasciatus mexicanus
A few leds (Either due 4-5K NW's to represent the sun, or a few royal blues to keep it dim and "deep)
Than a standard filter and heater can be installed in the back.

[x5tr41ghtj4ck3t]

I was a little confused by the aquarium suggestions, but now I understand what you two are saying.
I was thinking something more along the lines of blind animals in a realistic cave (which usually has very cool temperatures and complete darkness).
The idea was more of a hypothetical question than it was something that could be duplicated very easily. Was leaning more toward an evolution of the hobby.

Life like this:
and this:

might be the main inhabitants.

[1.0gecko]

If you can find those, go for it.