GloFish Aquatic Life

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Home & Habitat
Freshwater Aquarium Plant Maintenance Guide
Learn how to pick the right aquarium plants, substrate, lighting, and fertilizers to ensure that your aquarium plants thrive and stay healthy.
Updated on July 17th, 2026
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
Care Sheets
Paradise Fish Care: Complete Guide to Tank Size, Food, & Habitat Setup
Learn how to care for Paradise fish, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Care Sheets
Damselfish Care: Expert Tips for a Thriving, Healthy Fish Tank
Learn how to care for a Damselfish, recommended diet and aquarium setup. Find Damselfish for sale, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Care Sheets
Freshwater Aquarium Setup: A Step-by-Step Guide for Beginners
Learn how to set up a freshwater fish tank and key considerations regarding placement, supplies needed, and the set up process.
Updated on October 23rd, 2025
Training & Behavior
Why are my GloFish fighting? What causes aggression and how to stop it?
GloFish are schooling fish. They do best in groups of 6 or more. If you have just a few, they may be stressed which can cause aggression. Check the water parameters since an imbalance in chemistry can cause stress as well. You can use a home test kit (one with liquid drops, not test strips) or submit a sample to you local pet store or aquarist. Most will perform water testing for free or for a nominal fee. Ideal parameters measure 0 ppm (parts per million) ammonia and nitrites with nitrates at 40ppm or less. pH of the water should be between 6 and 8. They are cool water fish, so aim for a water temp between 65 F and 75 F. Hopefully, this will help. The other option you have is to remove the aggressor. You can request a consultation to discuss the situation and set up in greater detail or if you have further questions or concerns.
Updated on September 24th, 2025
Food & Nutrition
New to fish? What are the easiest fish and tank size for beginners?
Guppies or Neons are excellent "starter" fish. Care is simple and they are inexpensive. A standard 10 gallon tank is recommended to start. Most people don' t realize the amount of "work" needed to maintain a tank. Filter maintenance, monitoring water chemistry, water changes, monitoring fish health and providing a balanced diet are just a few items that need regular attention to keep a tank thriving. Even though fish aren't as cuddly as cats and dogs, they do have their own personalities and even respond to their owners, especially at feeding time! Studies have shown that simply watching fish in a tank can lead to a reduction in both heart rate and blood pressure. It is quite relaxing.
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
Training & Behavior
Why is my fish sick, not eating, gasping, and darting in its tank?
Check water chemistry first. Use a home test kit or submit a water sample for testing. The local Petco may do this for free or for a small fee. Aim for an absence ( 0 ppm) of ammonia and nitrites with nitrates at 20 ppm or less. Perform partial water changes, no more than 30% at a time, to stabilize chemistry and/or to improve water quality. Use only conditioned water that is temperature matched to prevent stress or shock. Check water temp as well. Any of these can drive a fish to the surface. The "flashing" (darting about) can be due to infection (bacterial, fungal or parasites). Consider a broad spectrum antibiotic or an "all in one" product to treat multiple infections. Look in the Aquarium section of the local Petco for options. Follow label directions carefully and remove the carbon filter insert during treatment if indicated.
Updated on September 24th, 2025
Vet Q & A
My fish is at the bottom of the tank, breathing slowly. What's wrong?
Thanks for reaching out about Nemo and including photos. There is no evidence of Ich in the photos. Have you tested water quality for pH, ammonia, nitrites and nitrates? Correct problems. If having difficulty breathing (slow gill rate) add an air stone. A veterinary visit is recommended to assess and provide a diagnostic/treatment plan. Good luck.
Updated on September 24th, 2025

GloFish Aquatic Life

7-Pack GloFish Tetra

Cosmic Blue Shark GloFish

GloFish 20G Community Collection

Galactic Purple Tiger Barb

9-Pack GloFish Danio

Starfire Red Longfin GloFish Tetra

Cosmic Blue Longfin Tetra GloFish

GloFish 10G Community Collection

Starfire Red Tiger Barb 5-Pack

Sunburst Orange Tiger Barb

7-Pack GloFish Tiger Barb

Assorted GloFish Tetra - 5 Pack

Assorted GloFish Longfin Tetra - 5 Pack

Electric Green Danio - 5 Pack

Assorted GloFish Danio 5-Pack

Assorted GloFish Tiger Barb - 5 Pack

Electric Green Tiger Barb - 5 Pack

Electric Green Longfin Tetra - 5 Pack

Cosmic Blue Danio 5-Pack

GloFish 10G Active Collection

Moonrise Pink Longfin Tetra

Sunburst Orange Tetra - 5 Pack

Starfire Red Danio - 5 Pack

Cosmic Blue Tetra - 5 Pack

Starfire Red Tetra - 5 Pack

Sunburst Orange Danio - 5 Pack

Galactic Purple Longfin Tetra

Electric Green Tetra - 5 Pack

Electric Green Longfin Barb

Sunburst Orange Longfin Tiger Barb

Premium Electric Green Male GloFish Betta

Premium Sunburst Orange Male GloFish Betta

5-Pack Female GloFish Betta

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