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Choosing the right schooling fish is essential to creating a thriving freshwater aquarium. At Petco, we carry a wide variety of small and large schooling fish great for any aquarium.
Updated on October 23rd, 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 December 21st, 2025
Search Petco to learn about blackwater fish aquariums. We want to help you decide what lifestyle is best for your unique fish.
Updated on October 23rd, 2025
Learn how to care for Foxface fish & Rabbitfish, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on October 23rd, 2025
Some fish species generally do well in smaller aquariums, are more adapted to aquarium life, & can be slightly more forgiving with water quality fluctuations.
Updated on October 23rd, 2025
It is likely the Rosy Barb had the fins nipped by the guppies. You'll need to separate them to allow for healing. Additionally, rosy barbs do best in small schools (4-8 fish). This will allow for some measure of protection against bullying by other fish.
Updated on September 24th, 2025
This could be bacterial infection. Most minor infection can be managed or resolved by providing pristine water conditions and a tiny bit of plain aquarium salt (NOT table or Epsom salt). Perform daily partial water changes, about 30%, using aged or conditioned water that is temperature matched to prevent further stress or shock. Dissolve about 1/2 teaspoon of plain aquarium salt per gallon of water into the tank. Treat for 10-14 days then reassess their condition. If necessary a broad spectrum antibiotic can be found in the aquarium section of the local Petco. Follow label directions carefully. As an aside, Bettas do best between 78F and 80F. Cory cats prefer cooler temps, between 60F and 75F. They do not do well at temps that Bettas are kept in, eventually they will become stressed which can lead to infection. Consider separating one or the other into a tank with the appropriate water parameters.
Updated on September 24th, 2025
Hello and welcome to Boop by Petco. You can try a few different routes to see if anyone would like some of your fish. You can post on Kijiji, or you can go around to your local pet stores and vet clinics and let them know you have free fish for good homes. Pet stores might be able to help you out if they have a bigger tank. You could also put up flyers. Best of luck finding good homes for your fish.
Updated on September 24th, 2025
Gold fish can make great fish but they can live up to 25 years and require a large tank that may need to be upgraded if they grow too large. Do get at least 2 fish. Here are some links which may help: https://www.petcoach.co/article/chewing-in-puppies-how-to-control-it/ https://www.aqueon.com/information/care-sheets/goldfish https://www.hartz.com/how-to-introduce-new-fish-into-your-aquarium-tank/ I hope this helps and congrats on your new pets!
Updated on September 24th, 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