GloFish Freshwater Sharks for Aquariums

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New Pet
Freshwater Semi-Aggressive Fish: Top Secrets for a Thriving Tank
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
Home & Habitat
Freshwater Fish Compatibility Chart: Choose Happy Tank Mates
Find out which freshwater fish can live together with our compatibility chart and tips for creating a harmonious aquarium.
Updated on November 13th, 2025
New Pet
Master Small Marine Fish Care: Tank Setup, Food, & Compatibility Guide
Small Marine Fish are favorites with marine aquarists and includes a wide range of species.
Updated on November 13th, 2025
New Pet
Aquatic Pet Safety: Keep Your Home Aquarium Pets Healthy & Safe
Learn how to safely handle your aquatic life to avoid toxin & bacterial exposure. Find aquatic life care supplies at your neighborhood Petco pet care center.
Updated on November 13th, 2025
Home & Habitat
Aquarium Lighting Guide: Get the Best Light for Healthy Fish & Plants
We can help you navigate your way through all the types of lights in fish tanks and determine which type is best for your aquarium.
Updated on November 13th, 2025
Health & Wellbeing
Can rainbow sharks , guppies, and neon tetras stay together?
Rainbow sharks are generally aggressive with other fish and are not a good match with peaceful fish. Tetras and guppies are generally fine to live together. When picking out fish, you want to keep a community that all have the same aggression levels. The store clerk will be able to help you with that information. I hope this is helpful and please feel free to post any additional questions.
Updated on August 12th, 2025
Health & Wellbeing
I have a 20 gallon tank. I'm thinking of buying +5 fish. Which fish could I buy and what would I need for the fish and tank?
A fish tank will need a filter, a light/hood and a heater. Make sure the filter is rated for at least twice the tank volume. The heater should be adjustable since water temperature will depend on the species of fish. Good "starter" fish include Tetras, Mollies, Danios or Tetras. A new tank should be set up and left running empty for several weeks before adding fish. A pinch of flake food can be sprinkled in daily. This "cycling" will allow a population of beneficial bacteria to colonize the tank and filter. These bacteria will break down wastes (ammonia, nitrites and nitrates) which are toxic to fish.
Updated on August 12th, 2025
Health & Wellbeing
setting up my first ever freshwater fish tank, need to know how many fish should I put in my 55 gallon fish tank,
For small bodied fish (tetras, minnows, guppies, etc) the general "one inch of fish per gallon" rule will likely be fine. For larger bodied fish (goldfish, plecos, Oscars, etc), it should be closer to one inch of fish per 3 gallons of water. Always use the full grown adult size when deciding how many fish to keep. Take into account schooling fish as well which should be kept on groups of at least 5-6 fish.
Updated on August 12th, 2025
Health & Wellbeing
Will 2 Bala sharks be okay in my 6.5 gallon tank
No, this is far too small for an animal of this size assuming you will be keeping them for the length of their life. A single Bala shark should be kept in something as large as 25 - 30 gallons as a juvenile. They will require something much larger than this once they reach adult size. Hope this makes sense. Let me know if there is anything else I can do for you.
Updated on August 12th, 2025
Health & Wellbeing
I would like to know how I can make my goldfish live the longest possible life they can and how to add more decor after I added the water and conditioning today and I am going to go get my fishies I think I am going to go with two but how to properly
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 August 12th, 2025