Blind Cave Tetras

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darkness975

Candiru
MFK Member
Jan 2, 2007
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irgendwo
Before I start I just would like to request no one flame/hate/criticize my current setup; I assure you the fish are all fine.

Greetings MFK community. I have been a fishkeeper for many years, but due to more recent financial restraints the only fish I have are a male betta and two white cloud mountain minnows. They live in an unfiltered tank which is kept warm by means of the lights and radiators in the room and I monitor ammonia/ph/etc and do very frequent water changes and the fish have been happy for nearly 2 years this way.

I have several unused tanks in the basement; a 5 1/2 gallon, a 10 gallon, a 3 gallon, 6 gallon, and some others. I was considering trying to house two or three blind cave fish in one of them without a filter. Like the other tank I would perform frequent water changes to keep the water in good health and the cave fish are very tolerant of lower water temps in the high 60s that most tropical fish would not be able to tolerate. Just was wondering if anyone else has tried to do this with cave tetras before and if so how successful were you? I had several of them in one of my larger community tanks back in the day and I miss their novel presence :(

Everyone knows the optimum setup for any fish is a heated/filtered/planted/etc tank but it is not the "only" way to house certain fish as long as the keeper is experienced enough to compensate for the lack of a filter. That being said, I would never be foolish enough to try housing most fish species (freshwater or marine) without a properly filtered tank of ample size. I think it could work with the Cavies given their ability - and for spawning preferred ability - to live in water temps in the high 60s range.
 
erk419;4968892; said:
Why not just add a filter?

Posted on mobile.monsterfishkeepers.com


Because between financial constraints and also because the house I reside in is not my own and the owner does not wish to have a fish tank filter running 24/7. Long story on that , just wondering if anyone else has succesfully maintained an aquarium without a filter by performing frequent water changes and such similarly to how I maintain my other tank with the betta.
 
The problem I can see with this is lack of oxygen without water surface breakage from the filter. With a betta they can breath air from going to the surface so not having water breakage on the surface is not an issue. Now I don't know about the tetras but I would imagine they can't breath air like bettas but I could be wrong if I am then I don't see why it wouldn't work. If I'm right then its not going to work they would sufficate.

Posted on mobile.monsterfishkeepers.com
 
Id imagine an airstone would use about the same amount of electricity as a filter.

Posted on mobile.monsterfishkeepers.com
 
you are correct in that blind cave fish do not possess a labyrinth organ for air breathing the way bettas have. that being said, neither do the white cloud mountain minnows that are in another unfiltered tank and with very frequent water changes they are alive and thriving (active, bright colors, good appetites, sparring with one another playfully, etc).


For water breakage I would perform daily water changes the way I do now to the minnow tank.

I should also add that I'm not talking about a small bowl which would surely become oxygen deprived quickly. It's a 10 gallon tank.
 
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