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Learn how to care for semi-aggressive fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on November 13th, 2025
Learn more about these slow moving fish and the care they need when added to your aquatic environment.
Updated on November 13th, 2025
Learn more about Killifish and their care to see if they are the right aquatic life to begin or add to your aquarium.
Updated on November 13th, 2025
Learn how to care for Boxfish & Cowfish, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on November 13th, 2025
Learn how to care for brackish water fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on November 13th, 2025
It sounds like you need to take a trip to your local pet store. The clerks there can help you pick out an appropriately size tank with proper filtration and heating that can help keep Sushi healthy. They can also let you know what water treatments you'll need for the water in your area, as well as test any water you bring it to see if it is OK for Sushi to live in. Pet stores will also carry commercial goldfish food which is a balanced diet that is given to them. It should have feeding instructions on it so you know how much is appropriate to give to Sushi.
Updated on August 12th, 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 August 12th, 2025
They may be stressed from the trip, the water may be too cold (low temps can affect appetite in fish) or the water chemistry may be off. Consider a partial water change. Use only conditioned water that is temperature matched to prevent further stress or shock. The fish food is fine. They will likely eat it once conditions are corrected and they settle down.
Updated on August 12th, 2025
Thanks for reaching out about Hal and including pictures. It is not normal for once active fish to become lethargic. Firstly, test the water quality for pH, ammonia, nitrate and nitrite, and correct any abnormalities. next, check the nutrition. All fish have a requirement for vitamin C, and this vitamin is not stable in pelleted foods for long (typically 3 months). Different fish pellet brands have different nutritional values, so varying brands could help. If your fish appears sick, seeking an appointment with a fish veterinarian is needed for a diagnosis and to determine a treatment. Good luck.
Updated on August 12th, 2025
Thanks for reaching out about Arrow. Dried shrimp is an inappropriate diet for fish as low in calcium (no bones), high in phosphorus. Being dried, many other nutrients (vitamins) are destroyed. A commercial pellet in addition to whole fish is recommended. Monitor water quality as healthy water is important for a healthy fish. Good luck.
Updated on August 12th, 2025