Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (
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chromiskid 11-23-2008 07:15 PM

new 10 gallon
hey i just set up a new 10 gallon on 9/17/08
it looks good but i think my shark is lonely
i have 2 goldfish, 2 guppies, and 1 shark.
every one has a buddy but him (i know, but im worried about these things :-P)
should i get another shark to be his pal?

Tyyrlym 11-24-2008 07:55 AM

Umm, what kind of shark? Frankly I can't think of any fish referred to as a "shark" that's going to do well in a 10 gallon tank. Also aside from Bala/Silver Sharks they are loners for the most part. Getting another one would be a bad idea.

Freddiesbuns 11-24-2008 03:10 PM

Also, goldfishes are very messy fishes and they might suffer from the ammonia pollution in a 10 gallons. :-? From what I've read goldfishes need 30 gallons of water per fish to stay in good health

Tyyrlym 11-25-2008 06:25 AM

Ah, shows what I'm paying attention to.

Yeah, the shark is iffy but the goldfish are a definite problem. A single fancy goldfish needs something like 15 gallons of water at a minimum. They are large messy fish and require an overfiltered tank. Also goldfish are cold water fish and do best in the low 70's to high 60's water temp while the shark and guppies are tropical fish that need a heater and do best in the high 70's.

Could definitely use some more details about your set up or pictures.

chromiskid 11-26-2008 07:44 AM

I get my water tested a lot, and yes, my ammonia is high most of the time. I just add prime then it's back to normal. It's not to messy... I have a Penguin 150 and it really gets the job done. I will try to post some pics... I just need to figure out how to! Thanks for all your help so far!:-)

chromiskid 11-26-2008 07:53 AM

1 Attachment(s)

Tyyrlym 11-26-2008 07:56 AM

Prime won't return things to normal. If added in the right amounts it will detoxify it but its still there.

1) What kind of shark?
2) What kind of goldfish?
3) What are the sexes of the guppies
4) How "high" are these ammonia readings?
5) How are you measuring the ammonia, test strips, liquid test kit, fish store testing?
6) How do you maintain your filter? Cleaning, cartridges, et?
7) How often do you change the water?
8) How often do you vacuum the tank?
9) What temperature is the tank?
10) Do you have a heater?

I'm honestly not even sure where to start really.

The goldfish will outgrow the tank, RAPIDLY. It's too small to comfortably hold even a single gold fish much less two and other fish as well.

As far as I'm aware there is no freshwater shark who will do well in a ten gallon tank. Most of them get into the ~5" range with bala's getting to over a foot.

You've got cold and warm water fish in the same tank. This means one of three things. One the tank is to cold for the shark and guppies but just right for the goldfish. Two it's too warm for the goldfish but just right for the others. Three, it's at the perfect temperature to make everyone miserable.

Messy doesn't refer just to bits floating in the water. Goldfish make a LOT of ammonia waste, far more than other fish in their size range. Two goldfish in such a small tank will place a tremendous strain on your biofilter even if the water is crystal clear.

Ammonia is toxic to fish, it burns their gills. A high reading isn't something to dose a little Prime and be fine with, its a serious health concern for the fish.

From the pics you posted it looks like you've got a male and a female guppy in the tank. The female is likely to be harassed by the male, a lot. Typically you want to keep two to three females per male so that the males amorous attentions are spread around and some of the girls get a break. I wouldn't add any fish to your tank though. Also since you have a female and a male be prepared for them to start making babies. Lots of babies.

These questions are being asked because right now with the information you've given it looks like you're in for either a lot of dead fish or a lot of miserable ones.

Kim 11-26-2008 09:07 AM

Yes, yes, yes, that advice is very good. Also, please don't feel that we are harassing you, we just want to make your experience with fish a good one, and unfortunately due to a lot of bad information out there the setup that you have now is really destined to fail. I just wanted to make sure that you realize that we are only saying these things because we want what is best for your fish and for you too, not to be snooty or mean. Can you return the fish or find new homes for them? The guppies are fine and would do well with other smaller tropical fish. If I had to make a guess, I would say that you have an irridescent shark (the type that is commonly sold in stores). These guys along with your goldfish get huge and besides their enormous waste production will simply get too big to move in that tank very fast. I'm sorry for your rocky introduction to the hobby, but if you make some changes it will turn out for the better.

chromiskid 11-29-2008 04:27 PM

hi. sorry no response for a while. i went to see family for thanksgiving! i get my ammonia tested at a fish store. i'm not sure what type of shark it is. i have both a male and female guppy. my ammonia level is just a little high, but could be a threat if i don't do anything. i change the filter cartridge every month. i do 50% water changes every other week, i don't vacuum the rocks ever:-? i have no heater and finally the tank is kept roughly around 73 degrees f. its a bala shark. i think i answered all your questions. i will try to post some pictures soon!;-) oh and my goldfish are fantails! hope this helps!

iamntbatman 11-29-2008 05:29 PM

Bala sharks get absolutely huge - over a foot and sometimes up to 16" in length. They're also active swimmers and need to be in a school to thrive. In other words, they need to be kept in a huge tank, much bigger than your ten gallon. They really need to be kept in a six foot (or eight foot, really) tank for long term care.

There's no need to replace your filter cartridge unless it is physically falling apart. If you replace it, you're throwing away all of the beneficial bacteria that have built up inside of it. Instead, when it gets gunked up you can just swish it around in some of the water you remove during water changes.

Guppies can definitely be kept in a tank your size, but goldfish cannot. You would really need something on the order of a 40 gallon breeder for two adult fantails. Also, as was mentioned, you can't house tropical fish (the guppies and shark) with coldwater fish (the goldfish) and expect both types to be healthy.

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