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Related Articles & Questions
- Care Sheets
Essential Large Marine Fish Care Guide: Tank Setup, Diet, & Tank Mates
Learn how to care for large marine fish, recommended diet and habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
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Aquaculture for Pet Fish: Essential for Healthy Tanks & Happy Pets
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Paradise Fish Care: Complete Guide to Tank Size, Food, & Habitat Setup
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Freshwater Fish in Tank: Compatibility Guide
Find out which freshwater fish can live together with our compatibility chart and tips for creating a harmonious aquarium.
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- Health & Wellness
How to move a goldfish long distance and keep them stress-free?
Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. Begin your preparation for the move a week or so before the day itself, by removing ornaments and other obstacles from within the tank. Each day leading up to the move, perform a 15-20% water change, so that by the time you are ready to move, the tank water will be clean but also stable and mature. On the day itself, preserve as much of the original tank water as possible, to re-introduce into the tank at the other end. The best way to transport your fish is within thick bags, like the ones pet shops provide when you buy new fish. Make sure that the top of the bag is well sealed to prevent spillages. Store the bags containing your fish in a sturdy box, padded with polystyrene or other filled bags to keep the bags secure and upright. Cover the box, as darkness helps to reduce stress in your fish, then secure the box safely within your vehicle. Since your journey is more than a couple of hours long then you may need to arrange for a rest stop to re-open the bags and allow oxygen to enter. Once you've arrived, get the tank set up and watered, with all of the filters and air pumps running, and allow at least half an hour for the tank to settle. You will probably need to add more water to the tank, but try to keep this to a minimum and use as much of the original water as possible. Finally, introduce your fish to the tank in the same manner as you would if bringing them home for the first time, by floating the bags with the lights off, allowing the temperature to stabilize, and gradually mixing tank water with the bag water before releasing your fish. I hope this is helpful!
Updated on September 24th, 2025
- Health & Wellness
My fish won't eat after traveling. Is it stress, new food, or water?
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 September 24th, 2025
- Vet Q & A
How to identify a wild freshwater fish resembling a mosquito fish?
Without an image, it will be difficult to definitively identify the fish in question. It may be a wild guppy. You can request a consultation which will allow you to share images. It is not recommended to add wild caught fish to an existing aquarium without an acceptable quarantine period.
Updated on September 24th, 2025
- Health & Wellness
My fish has fin rot & a wound. Is quarantine & salt enough? Any subs?
Generally speaking you can follow these guidelines: - set up quarantine tank: make sure the tank is well oxygenation and has some plants for hiding; - add 1 teaspoon of aquarium salt per gallon; unfortunately it is very difficult to replicate the composition of aquarium salt back home so I would strongly suggest to buy a specific product. - add this product https://www.liveaquaria.com/product/4410/?pcatid=4410 as indicated; - leave your fish there and feed him regularly for 3-4 days until you don't see any improvement - If no results at all are seen after 4 days a check up would be needed as more specific tests may be needed to establish a specific diagnosis. Hope this answer was helpful, but 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. Please find the time to give us a feedback about the consultation as that will be used to improve our service.
Updated on September 24th, 2025
- Vet Q & A
My fish is laying on the fake plant and barely moving. What's wrong?
There are several causes that can provoke these signs fro water imbalances to specific diseases like swim bladder ones. This problem requires a quite radical but logic approach. Begin by submitting a water sample 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. Oxygen concentration and quality of the filters should be determined as well. If water quality is good and there are no major imbalances, your fish should get examined to look for any sign of bacterial/fungal infection and eventually water should be treated. 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
