Goldfish are incredibly hardy. With the amount of waste goldfish produce, the water parameters can change constantly, with ammonia and nitrate spikes occurring almost daily, which is fine for the Goldies.
Goldfish have a metabolic rate that thrives at lower temperatures than their tropical friends, who will be healthier if living in warmer waters. Keeping goldfish at warmer temperatures, again, is technically possible, but you will be severely stunting their life expectancy. Goldfish will live much longer and will be much healthier when kept in water temperatures that they prefer, which is considerably cooler. Unlike many tropical fish who will eat slowly and at their own pace, a goldfish will not think twice about gobbling up any morsel of food that is dropped into their environment.
The danger of this one is obvious. Should I remove the tetras and place them in a separate tank? The goldfish almost seem traumatized.
Thank you. Rita, it sounds like your fish have fallen ill. Depending on your tank size, it sounds like you might have an overcrowding problem. Ammonia and pH spikes can be very harmful. You should also test the Nitrate and Nitrite levels.
Reducing feeding can also make a difference in an overcrowded aquarium, at least until you can upgrade your tank. If you need to, there are water conditioners in stores that will help lower ammonia. There also could be a chance that your tetras might have picked up something on the way home and the disease was transmitted onto your fish.
This way, you catch any illnesses before they affect the fish in your main aquarium. New fish are generally stressed from handling, and this stress often results in a lower immune system that can introduce them to a number of diseases that will make them sick.
So if the new fish does catch a disease, you can treat them quickly without worrying about your other fish getting sick. I have had 3 medium sized goldfish in a 20 gallon aquarium. I just added 2 small tetras and things have gone wrong.
Also, all the fish are sitting at the bottom of the tank and barely moving around. They ARE eating but go to the bottom of the tank directly after eating. What am I doing wrong? Should the tetras be placed in a separate tank? Goldfish need strong power filters to manage all that waste they excrete, and the power filter alone can be very stressful for your betta. You can drop him in a three-gallon aquarium for now with a small filter setup that either has a way to manage the water flow or continually keeps a low current.
A problem you might have with this setup is keeping the water temperatures stable. Keep a thermometer on the aquarium so you can constantly monitor the temperature and make sure you have a heater plugged in for those cold winters! Thanks that was a very helpful post!
But I have to disagree, I have been keeping goldfish bottem feeders and neon tettras AND guppys together. And i have not had on problem yet, there all a big happy bunch.
The thing I did think about is, I am just feeding them all goldfish flakes. Hi Jera — It definitely depends on the personalities of your fish. Keep in mind though that guppies and goldfish both have different nutritional needs, so guppies might be better off with tropical food in their diet. Is cooler water less likely to cause disease. It will just take longer before you notice the infection, though the parasites will still be there.
It is possible that some diseases have built resistance to warmer temperatures. Then again, some infections have also built resistance to cooler temperatures.
It is, however, important to keep goldfish with species that require similar habitats and conditions. Goldfish are not toxic in any way. This myth likely stems from the large amounts of ammonia these fish excrete, but all fish excrete ammonia, not only goldfish. Goldfish do tend to be messy and eat a lot.
They are also a heavy-bodied species, so they excrete more waste than other species of smaller sizes. But they can still be kept with other fish.
All aquariums should be large enough to dilute the waste of the tank inhabitants, and filtration that can handle the biomass of large fish such as goldfish must be provided. If these requirements are met, then goldfish can be kept with tankmates. In any established aquarium, there should never be any readings for ammonia and nitrite.
Nitrate should be kept as low as possible with frequent water changes. Goldfish are actually omnivores, eating both plant and animal material. While they consume a large amount of plant material, they have no problem eating up fish eggs, invertebrates, and smaller fish species.
Larger goldfish have been known to eat smaller tankmates. A proper diet for captive goldfish should include both plant and animal material. Goldfish will happily graze on blanched romaine lettuce, cucumber, oranges, and soft-leaved aquarium plants such as duckweed and anacharis. In regard to animal-based foods, the various freeze-dried and frozen invertebrates available on the market make nice goldfish treats.
Because they are so abundant and easy to reproduce, common goldfish have become very popular as feeder fish, but they are far from ideal as feeders. They have a particularly high fat content. They also contain large amounts of thiaminase, which destroys vitamin B1 thiamin.
An animal that consumes too much thiaminase will develop a B1 deficiency, leading to illness and death. If you have a predatory fish and want to use feeder fish, your best choices are properly quarantined or home-bred tropical species.
Under the right conditions, goldfish are a fantastic species of fish to keep. They are hardy, adaptable, long-lived, and have an extensive and interesting history.
It is important to learn as much as you can about any species you intend to keep. When properly cared for, goldfish are a great choice for any fishkeeper regardless of their level of experience. The above myths should not be promulgated in the fishkeeping hobby, as they work against the well-being of these beautiful and interesting fish.
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