Just wondering if anyone knows what kinds of fish can live in a bowl without a pump for aeration? I found a huge fish bowl in the garage and I would like to put a fish in it. I know that Betas can live without a pump and so can goldfish, I think. Was wondering if the bottom feeders that look like catfish or sharks can? Any help or advice would be appreciated. Thanks
The reason that bettas can survive in a bowl is that they are capable of getting some of their oxygen from the air directly. There are other groups of fish that can do this but most of them are so large that even a large fishbowl would be cruel to keep them in. If the bowl you have is really big you might be able to keep one or two dwarf gouramis in it. They are fairly small, attractively colored, more active than bettas and it is easy to tell the males from the females so you don't wind up with 2 males fighting. Figure out how many gallons of water the bowl holds and ask at your local pet/fish store if it is big enough. The more surface area you have, the better oxygen will be absorbed into the water. That is important if you want to put a non-air-breathing fish in it the bowl-most bowls are much narrower at the top than in the middle so you would make sure the water level is closer to the middle of the bowl causing more of the surface of the water to contact the air. Do not be tempted to put more than a couple of small fish like guppies unless it is big enough to run some kind of filter and aeration system in it (they do make some pretty nice small systems). From what I understand most of the little catfish need more oxygen than can be kept in a bowl.
***Edited By: arachyd on 7/29/2006 1:29:24 PM*** Reason: spelling
bettas are able to survive this way, for a short time, but it is something they do only when dying in the wild they do not do well this way 3-6 months maybe, they should live 2 years or more
goldfish get to be 6+ inches long, unless you are going to stunt their growth, but that would be like putting a puppy in a collar and never changing it, it hurts them it deforms their insides
you can get small filter systems for bowls though, they include a pump and undergravel filter it will airate the water and keep bettas and perhaps guppies alive, depending on how warm your house is as they do way better in warmer water above 77 if possible
Thanks for the info, guys. I have been searching thru the garage and found 2 pumps, so I may buy a small filter to put in it. My boyfriend bought a house from an old man, and got almost all the household contents. He stored most of the stuff in the garage and I have been having a great time going thru it. I checked the fish bowl and its a 2 1/2 gallon one. I think it used to be a huge jar to hold snacks in a grocery store. but it is thick glass and I have a starfish, some neat rocks and other stuff and thought I would make an aquarium--might be good for my blood pressure!