Tropical Fish Keeping - Aquarium fish care and resources

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GwenInNM 02-07-2011 06:05 PM

Have Rainbow Fish Question!!
 
Oh, great I hope I haven't made a huge mistake. I felt like I looked up information on Rainbows and they are so peaceful. I have a used tank I bought - I thought it was a 30 gal, but I'm starting to think it's smaller - doing water changes, when I take out 10 gal the tank looks half empty. Found a calculation site, and the tank may be closer to 20 gal - ugh! 30L " x 8W" x 17H.

Anyways, I got three Rainbows yesturday - 2 Boesemani and one that is just "blue" can't remember if it's Australian or whatever - one of the Boeseman's turned a deep blue stripping in the head area and was behaving strangely toward the others -either looking like he's courting it - shivering by it's side for lack of a better word or darting and chasing the others.

I really don't have room for more than 3 and it looks like what some are saying is they should be in larger schooling groups. Have I completely made a mistake?

I guess I could return them, but I do like them. I have 5 small Danios in the tank too - I cycled with them and everyone has survived.

I have plants, a bog wood.

Help!! I'll be so made at myself now if this tank is too small or there will be problems with having this number in the tank.

Any advise appreciated!!!

Gwen

GwenInNM 02-07-2011 06:18 PM

Tank size??
 
For those of you who are real tank experts, my tank is probably pretty old, but a nice shape. It's an Oceanic brand. The width is misleading at 8 inches, because it does bow in the front, like an uneven hexagon. Very 70's, I'd call it. So it is 30 inches long, and 17 inches high, but has six sides

Can someone tell me what that is in gallons???

Gwen

Jwest 02-07-2011 08:04 PM

Thats very sad.. you might just want upgrade tanks for the rainbows.. there's some sites that calculate tank volume. You can also do it the old fashion way by yourself

GwenInNM 02-07-2011 08:48 PM

I returned them
 
:-(

Well I feel really bad tonight about this. I did return the 3 Rainbow fish, I couldn't keep them knowing that my tank is too small and they will pick on each other and not be happy. They are really pretty fish, and now I wish I had a bigger tank, but just can't afford that now. Now, the big bummer is what fish to get? Seems like so many fish have issues with each other, and they ones that don't I consider kind of boring.

Oh well, probably do some Cory Catfish and call it done. Any other ideas with a 25 gal tank, and 4 small Danios so far??

tanker 02-07-2011 08:53 PM

The site says to average the sides that are irregular

Calculating Aquarium Volume - The First Tank Guide - How Can I Figure Out How Much Water My Fish Tank Holds?

Edited to add: as for fish, maybe threadfin rainbows? You'd need to do some research as to requirements, I don't know a lot about them, but you don't need as big a tank for them.

When I had trouble keeping my guppies alive in my small tank, I got some black neon tetras instead. They are really nice. I had them, my last guppy and some panda cories.

Jwest 02-08-2011 08:04 PM

If you wanna upgrade check craigslist but i know what you mean about having a tight budget =/. look into tetras maybe or rasboras. Rummy nose tetras, Glowlight tetras, Harlequin tetras, blood fins, and the common neon. Good luck!

GwenInNM 02-08-2011 08:12 PM

Rainbows etc
 
Quote:

Originally Posted by Jwest (Post 584968)
If you wanna upgrade check craigslist but i know what you mean about having a tight budget =/. look into tetras maybe or rasboras. Rummy nose tetras, Glowlight tetras, Harlequin tetras, blood fins, and the common neon. Good luck!

THanks for your words, suggestions. I did find a petstore today that has Dwarf Rainbows, and they are considerably smaller and not aggressive like the Boseman's toward each other or others in the tank.

Seems they would work in my aquarium, so they are up on my list right now. Also this store does have the threadfin Rainbows that were suggested, but I don't like them quiet as much. I had been to this LFS before and never noticed them, they are pretty plain as juveniles, but do develop very nice colors apparently :-P

Thanks all for replying

Gwen

Lupin 02-09-2011 04:36 AM

I've kept both Iriatherina werneri and Melanotaenia praecox myself. Between the two, I find the threadfins a better choice but that's just me being biased. I lost all my tropicals that were together with the praecox to the dreaded mycobacteriosis which started taking its toll first on all my praecox after they spawned daily for nearly three months. The praecox are very prolific but more prone to myco than threadfins. It's for this reason I like threadfins much better between the two. *shrugs*

If the 30g were mine and I have to choose rainbows as centerpiece, threadfins get my vote along with Pseudomugil furcatus and Pseudomugil gertrudae. They'll color up better if your substrate and background are dark while using a combination of pink and white lights. Keep tank heavily planted. They like to swim among plants while sparring against each other.


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