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39 votes

My fish are disappearing :(

The most reasonable explanation is that it died and was eaten by the other fish / snails. Note that some snails are carnivorous. Many fish are cannibalistic if the opportunity arises. Some leftovers ...
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  • 1,945
35 votes
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Why don't fish grow to their full size in a small tank?

Fish excrete hormones in their waste. In a confined space like an aquarium, these hormones build up and act as growth inhibitors, this is basically an evolutionary mechanism, to prevent fish from ...
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  • 3,073
25 votes

Do fish make noises in order to get attention?

Goldfish do not make noise to get attention but they will come to the surface of the water when you walk up to the tank. Goldfish and other fish will learn that when you come it means food is on its ...
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  • 18.8k
18 votes

How can I help my betta, who has a white-ish sore on his side, is laying at the bottom of the tank, and isn't eating?

It is most important that a betta fish have the right environment. If the environment is right, it's easier to treat any illnesses the fish may develop. Your fish needs at least 5 gallons (19 L) (...
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  • 2,348
17 votes

Goldfish unresponsive, what should I do?

Your goldfish has ammonia poisoning. First aid for this is to change 50% of the water at once. You need to change 20% of the water on day 2 and day 3, and from day 4 you need to change 10% water ...
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  • 18.8k
16 votes

How can I stop my turtle from eating my pet goldfish?

First, the turtles are eating the fish because fish are food, not friends. Turtles are omnivores and fish make up part of their natural diet. There's absolutely nothing you can do to stop it other ...
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  • 15.5k
14 votes

Why do fish tanks have closed roofs?

Nearly any cover you buy or build will allow enough air to circulate. If you're concerned, you can just leave a bit more space between the water surface and the cover, but this really isn't a big deal ...
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  • 3,853
12 votes

Aquarium water becomes overly acidic very quickly

John Cavan's advice is good. Some additional advice that I learned the hard way after many years of owning 80 and 300 litre freshwater tanks: If you don't have a working understanding of pH, it is ...
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11 votes
Accepted

Why are my fish dying?

After seeking advice I performed an ammonia test on the pond water and it came back at 8 ppm, which is the highest reading on the chart. This means that the water is poisonous to the fish. It turns ...
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  • 321
11 votes
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Dried goldfish became alive after re-introducing into water

Goldfish can live for up to three hours out of water. It also depends on where your goldfish lands. If they landed somewhere moist or in the puddle of water they spilled out of their bowel, they can ...
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9 votes

How can I help my betta who is laying at the bottom of his tank?

A couple of things to look at are tank size, temperature, and location. If that's actually the size of tank, its too small. While they do 'rest' a lot, bettas are actually fairly active fish. ...
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9 votes

How can I tell if my shrimp is pregnant?

If she's pregnant, she will normally hold a clutch of eggs and later the hatched babies below her hind swimmerets. Example:
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  • 3,073
9 votes
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Why do you need to change the water in your fish tank?

One of the primary reasons for water changes is to remove harmful waste and chemical compounds from your tank that tend to build up over time. This is especially important in new aquariums where ...
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9 votes

Is my betta dying/sick or just sleeping?

Contrary to what the pet stores would have you believe, every single betta fish needs more care than a small bowl. They make you think you're really upping their lifestyle by moving them from a small ...
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  • 4,474
9 votes
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Why did my Guppies not grow for 8 months?

There are a couple of issues that I can see here that may be limiting how your fish grow. 1. Temperature You didn't mention having a heater for the tank and I cannot see one in the picture that you ...
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  • 5,124
9 votes

One discus fish bullying the other discus

I have to strongly suggest taking these fish back to the store. I've kept discus for many years and bred discus in the past for roughly a decade. I can say with almost complete certainty that these ...
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  • 3,073
9 votes

Where do you keep aquarium plants until you plant them in an aquarium?

Not only can you put your plants in another container, but you should. It is always a good idea to quarantine plants in a separate container for a few weeks before adding them to your tank, otherwise ...
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8 votes

How do I continuously change fish tank water?

You won't find anything that does this off the shelf at your local pet shop. It's possible to build it if you're an experienced plumber, but the short version is don't bother, just get a big canister ...
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  • 3,853
8 votes
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How do I make sure my fish tank is safe after my apartment has been fumigated?

This is a tough one, because you haven't been given a lot of time. Most likely, the bug bombs will be using some combination of pyrethrins or pyrhethroids, which are some of the most common ...
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  • 3,853
8 votes

How do I ease the passing of my betta?

Matt has asked me to post my results, so here they are. I had poor execution. If one is easily saddened or depressed then stop reading now. I set up a 5 gallon tank outside. Attached filter to ...
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  • 905
8 votes
Accepted

Is it possible to put a hot water (boiled using the gas stove) in a fish tank?

More dangerous than it is safe. Certainly very stressful. Guoramis are quite difficult to keep and it is most likely that they'll suffer the most (you listed your fish in decreasing order of ...
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  • 2,466
8 votes

What animal can be kept in a tank just under 3 gallons?

It is very hard to get a small tank to be in biological balance and to keep the water quality good, so I suggest you use this tank only for treating your fish with medication. This can be helpful if ...
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  • 18.8k
8 votes
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Fish swimming with mouth always touching the water surface

Fish swimming with their mouth constantly glued to water surface is a sign that they are gasping for breath. However, the reason for them being short for breath usually isn't the low oxygen ...
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  • 105
7 votes

Why do fish tanks have closed roofs?

As long as it's not completely sealed air will get in. Oxygen getting into the water this way isn't so fast that it can benefit from being fully exposed to the air. Other reasons for roofs: ...
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7 votes
Accepted

Do some ornamental fish live 200 years?

Most ornamental fish live only several years; however depending on the species can live for up to 30 according to this Lifespan of freshwater aquarium species. For example, it appears that most ...
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  • 1,667
7 votes
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How do I do a water change in my fish tank?

Water changes are almost what they sound like, you're changing the water in the tank. But, with very few exceptions, you never want to change more than 50% of the water in the tank. Water changes that ...
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  • 15.5k
7 votes

What is swimbladder disease in fish?

Swim bladder disease, or disorder, isn't necessarily any one thing, it's basically the result of some other condition adversely affecting the swimbladder of the fish. The swimbladder is an internal ...
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  • 20.3k
7 votes
Accepted

What are the signs that a female platy fish is about to give birth?

I have found the following after observing several births from my fish. Signs: The dark gravid spot will become even darker and move closer to the cloaca. This is not always a sure sign though ...
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7 votes
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Goldfish coming to the top of bowl and releasing bubbles

I just went to the pet store and got an air pump and an air stone and installed them to my fish bowl. I observed that this solved 3 things :- Air bubbles trap some of the dissolved impurities and ...
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  • 181
7 votes

Is it possible to put a hot water (boiled using the gas stove) in a fish tank?

Well, yes, it is possible, but I wouldn't advice. Boiling water changes water hardness. Temporary hardness is mostly destroyed by mere boiling of water, when bicarbonates are decomposed, will ...
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