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Learn how to make a self-sustaining aquarium. Visit Petco to learn all the steps to create the self-sustaining aquarium of your dreams!
Updated on March 30th, 2026
Choosing the perfect gift for family and friends can often be a challenge. Fortunately, ‘fetching’ the perfect holiday treats and toys for your pup can be just as fun as your average game of, well...
Updated on October 23rd, 2025
Learn how to care for semi-aggressive fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on December 21st, 2025
Learn How to Care for a Salamander & Newts, recommended diet and habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on October 23rd, 2025
Do you have questions about algae in your aquarium? Petco has the answers! Learn about the types, causes and treatment options for aquarium algae.
Updated on October 23rd, 2025
Thanks for your question about your fish, and congratulations on your new family members! I didn't see how recently the tank was set up, but there are a couple of things that could be going on. I would start by checking your water quality - any abnormalities in water quality can make fish have abnormal behaviors, and the water looks a bit murky in the photos you provided. There may be parameters that need to be addressed depending on what you find. If you do not have a water quality kit, they can be purchased at the pet store or an aquarium store, or you can take a sample of your water in for evaluation to these places as well. Some will charge a small fee for this service, just so you are prepared. Also, with recent tank set ups, it can be stressful for fish as they are in a new habitat. I would recommend keeping the light on for only a few hours per day to start, as the bright lights can be shocking for them (since fish don't have eyelids). Gradually you can increase the length of t
Updated on September 24th, 2025
Thanks for reaching out about you fish. It is believed to be a Comet goldfish. Water quality and nutrition is the key to success. Testing water parameter for pH, ammonia, nitrite and nitrate will give you guidance for a healthy environment. Purchased food should be rotated out every 3 months as vitamin C and other nutrients degrade over time. Trying to maintain water temperature can be challenging with out a heater, but most fresh water fish tolerate some changes. Good luck.
Updated on September 24th, 2025
It could be algae growth. If it isn't on your Betta, there is likely no cause for concern. You can remove the decorations, scrub them down, rinse them well and return them to the tank. Perform a partial water change using conditioned water and clean the filter media if necessary. Do not overfeed or keep a light on for more than 8-10 hours. This will promote the growth of algae.
Updated on September 24th, 2025
I would recommend to have the water completely changed. New water should be ideally submitted for quality testing. Most pet stores will do this for free or a nominal fee. High ammonia levels, PH imbalances may be responsible for that as well. Oxygen concentration and quality of the filters should be determined as well. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.
Updated on September 24th, 2025
As for what kind of tank you will need: Basically a square fish tank, do not get a bowl. You will likely need a heater and an air pump, and a thermometer, It is easiest to by a complete kit at a pet shop. As for size of tank: The bigger is always the better....however a minimum size will be determined by the type of fish and their average size they will grow into, So once we know what type of fish you have and how many, we can tell you how big your tank needs to be and what type of "furniture" (rocks, plants, gravel) you will need.
Updated on September 24th, 2025