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GloFish Freshwater Sharks for Aquariums
Related Articles & Questions
- Care Sheets
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 April 9th, 2026
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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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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.
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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.
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Fish Aquarium Lamps: The Complete Lighting Guide
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.
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- Training & Behavior
Will rainbow sharks, guppies, and neon tetras get along in a tank?
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 September 24th, 2025
- Vet Q & A
20-gallon tank setup: What fish and supplies do I need to get started?
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 September 24th, 2025
- Home & Habitat
Is a 6.5 gallon tank big enough for two Bala sharks to thrive?
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 September 24th, 2025
- Vet Q & A
How to properly set up a goldfish tank, add decor, and new fish?
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
- Vet Q & A
What fish tank sizes are included in Petco's $1 per Gallon Sale?
##### What are the dimensions of tanks in the $1 per Gallon Sale? [Here](https://www.petcoach.co/question/?id=411222) are the answers to some of our most frequently asked questions: - What are the dimensions of my new tank? - What kind of hood will fit my new tank? - What kinds of stands will work with my new tank? - What kind of lighting is recommended for my new tank? **Aqueon10G**, **Marineland10G** - Product Dimensions: 20 x10 x12 - Compatible HOODS: Aqueon 20" Deluxe Full Hood - Compatible STANDS: the Brooklyn 10G, Aquatic Fundamentals Silver Vein Scroll 21x11 - Compatible LIGHTING: Aqueon 20" Deluxe Full Hood **Aqueon20 High**, **Marineland20 High** - Product Dimensions: 24x12 x16 - Compatible HOODS: AGA 24"BK VERSATOP GLASS - Compatible STANDS: Newport 20G - Compatible LIGHTING: Aqueon 24" fluorescent strip light or 24" LED light fixture (online only), Fluval Ultra Bright LED Aquarium Strip Light (online only) **Aqueon20 Long**, **Marineland20 Long** - Product Dimentions: 30 x12 x12 - Compatible HOODS: AGA-30"BK VERSATOP - Compatible STANDS: Brooklyn 29G, Winston 29G - Compatible LIGHTING: Aqueon 30" fluorescent strip light or 30" LED light fixture (online only) **Aqueon29G**, **Marineland29G** - Product Dimensions: 30 x12 x18 - Compatible HOODS: 30" BK versatop glass, Aqueon 20" Deluxe Full Hood - Compatible STANDS: Brooklyn 29G, Winston 29G - Compatible LIGHTING: Aqueon 30" fluorescent strip light or 30" LED light fixture (online only) **Aqueon40B**, **Marineland40B** - Product Dimensions: 36 x18x16 - Compatible HOODS: 36X18X16 BLK VRSATOP - Compatible STANDS: Aquatic Fundamentals Upright 50G 37x19 - Compatible LIGHTING: Aqueon 36" fluorescent strip light or 36" LED light fixture (online only) **Aqueon55G**, **Marineland55G** - 48x13x20 - HOODS: 2 of the 24 inch - STANDS: Brooklyn 55G - LIGHTING: Aqueon 48" fluorescent strip light or 48" LED light fixture (online only) *in-store only (We do not ship paned glass)
Updated on September 24th, 2025
