Are danios stable fish?

Question

Im trying to see if danios are stable fish for my aquarium. Do they live long? are they easy to take care of? What water conditions do they live in?

About 2 weeks ago I bought guppies and put them in a tank with black mollies and 1 other guppy they lived for quite a long time and there was no signs of anything wrong. Then all of a sudden within two days all my fish died. What could be the cause of that? did someone mess with my tank? because my tank is at school for my aquatic science class.

Thank you for your time!

Answer 1

I've had danios with guppies and mollies and they did fine. Sometimes when you add new fish of any kind you're taking a risk because they may be diseased, or have disease in the water that you dump in with them.

Answer 2

Danios are decent, peaceful fish, although they aren't all that much hardy, but they are still good. They live in normal water conditions just like any other of your fish (the guppies and mollies).

As for the other problem, there could be something wrong with the water (more likely the nitrates). Do a 25-30% water change and clean out the gravel (if it's a small tank, clean with hands, but if it's a tank above 20 gallons, clean with a syphon hose). There could also be another problem: a disease. But I'm mostly leaning towards the nitrates in your tank. The fish that have been in your tank the longest have survived them since they've grown used to them, but newer fish just won't last long at all (I've gotten 5 tiger barbs before when my nitrates were off track and this lead to their death after a couple days).

Answer 3

Danios are generally easy to keep and are good in a community tank. They are schooling fish so they do better in groups how many depends on the size of your tank. How long has your aquarium been set up? It usually takes 4-6 weeks for the proper bacteria to form in the tank to break down the waste products from the fish. Over feeding can also be a problem. Someone could have put something in the tank such as water which has not been declorinated and that could have killed the fish. But first you need to know if your tank has cycled. There are test that can be done to check the ammonia, and nitrate levels in your aquarium, check with your local pet store that has a good fish section.

Answer 4

Yes, danios are very easy to keep (as are guppies and mollies). But I don't think it's the fish that are the problem. Without knowing of any other circumstances, such as what signs your fish may have had when they died or if indeed someone has sabotaged your tank, my best guess is that the tank was not stable enough to put fish in it yet. Usually, a tank should be up and running for a few (2 or 3) weeks before introducing any fish. You also didn't mention what kind of equipment you were using. Filter, pump, heater? There are some good websites that can explain the 'nitrogen cycle' that occurs in aquariums.
Try: www.freshwatertropicalfishkeeping.com

I suggest that you read up on it before sending any more fish to their doom. Being more knowledgable in fishkeeping will ensure your success in a very rewarding hobby. Good luck!

Answer 5

One thing you should learn from your aquatic science class is the value of a quarantine tank. Anytime you add something new to your tank (fish, plants, even invertebrates or wood from another tank), there's always the potential to introduce a disease, or algae/snail problem. If you have a quarantine (and this can be as simple as a plastic storage container with a cheap filter, heater, and hiding spot) it lets you deal with illnesses before your other fish have a chance to "catch" them and gives your fish a chance to start eating and acclimating to your water conditions.

It's hard to say at this point if the problem may have been the recent additions, if someone added something to the tank, or whether or not it may have just "been their time" for the mollies and guppy. But without knowing for certain, you may want to do a thorough cleaning of the tank and all its contents before you add more fish. Some diseases and parasites will die on their own if there aren't any fish present, but others won't - in fact, some types of bacteria my encyst and survive exposure to drying, pH changes, and temperature changes. The only way to be certain that these are killed is to surface-sterilize everything in the tank by using a 5% bleach solution. You can do this by adding 1/20th of the tank volume of bleach to the tank (remove enough water to accommodate the volume) and letting the filter run for 15 minutes. Then drain the tank and rinse everything by filling the tank (and having the filter run) and draining 3 times before filling for use.

To your question about danios, yes, these tend to be hardy fish if they're healthy when you buy them. They live for 2-5 years and can live in room temperature-tropical tank conditions. They tend to be very active, so a group of 5 or so should probably have a 20 gallon tank and a tight cover to prevent jumping (I had one that liked to pretend it was a salmon and swim "upstream" by jumping into the filter every chance he got!). Guppies also tend to be hardy, but prefer to have a little salt added to their water (about 1 tablespoon per 5 gallons is enough, although they can tolerate much higher concentrations, even to marine salinity if acclimated over the course of about a week).

Answer 6

Answer to question of who mess with your fishes.
My answer is simple. You have a lot of helpful classmate who think the fishes are alway hungry and over feeding is the major cause of killing fishes in a tank. Could have been that the tank is too small also for that amount of fishes. Also anyone feeding dry cat food, will kill all the fishes in a tank.
Do you know on baby birds that need to be hand fed, it is best not to feed bread. It will sour and the baby bird will die. It is best to wet down cat food and break it up fine and using a eye dropper, hand feed the bird until it can fend for itself. Sincerely,

Answer 7

Your fish probably died because you failed to cycle the tank properly and after about 2-3 weeks the ammonia and nitrites built up to a toxic level. All of those fish are good for cycling a tank, so it's because you didn't do it properly. Here's a guide:
http://www.firsttankguide.net:80/cycle.php

Answer 8

merely a concept on the grounds which you moved the fish to a sparkling tank - have you ever examined the water for ammonia? Lethargy, putting out on the authentic of the tank, gasping, loss of urge for foodstuff are all indicators of this. you will possibly have further too many fish at as quickly as to the hot tank without permitting time for effective micro organism to construct up. whether they examined for this at your fish shop, in the event that they have been utilising strips (that are no longer the main solid) or a liquid attempt kit, the chemical compounds in those have expiration dates - they'll supply undesirable effects. the will arises to double verify for this and nitrite. As MM mentioned, you in addition to mght have a bacterial an infection that could account for the popeye.

Answer 9

They would be an extreme match for your guppies. As they are both tropical fishes, they both like the same temperature. Yes they are handy fish, I love them.