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Discover the fish tank filter system that’s right for your aquarium. Learn about mechanical, chemical, and biological filtration at Petco.
Updated on November 13th, 2025
Small Marine Fish are favorites with marine aquarists and includes a wide range of species.
Updated on November 13th, 2025
GloFish are brilliantly colored and beautiful fish. Learn how to care for GloFish, what to feed them, how long they live, their ideal tank size and more.
Updated on November 13th, 2025
Before establishing an aquarium at home, learn more about the basics of fish care.
Updated on November 13th, 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 November 13th, 2025
The Tang, Clownfish, and Chromis are marine fish requiring a saltwater aquarium while guppies are freshwater fish. These fish are not compatible as they require two completely different setups to accommodate their different environmental needs. If you are going to set up a marine aquarium - a 20 gallon aquarium is too small for the fish you have listed. A small Percula Clownfish maybe suitable in a 20 gallon aquarium temporarily, but be prepared to upgrade to a larger aquarium as it grows larger. In general, 50+ gallon aquariums are recommended to properly house marine fish as they tend to grow large and require plenty of room to swim. If you are planning to set up a freshwater aquarium, a 20 gallon setup is adequate to house guppies.
Updated on August 12th, 2025
Our Standard Aquarium Plant Pack provides a convenient solution for your dilemma. This package includes Micro Sword or Dwarf Hairgrass, Anubias Nana or Anubias Barteri Round Leaf, Java Fern, Red Cryptocoryne or Green Cryptocoryne, Water Sprite, Hornwort, and Cabomba. http://www.liveaquaria.com/product/prod_display.cfm?c=768+2145+2146&pcatid=2146 A substrate specifically designed for live aquarium plants such as CaribSea Eco-Complete Plant Substrate is recommended for long-term success. http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=9087 Be sure to provide proper lighting conditions by employing aquarium light fixtures specifically designed for planted aquarium use.
Updated on August 12th, 2025
In general these fish can all be housed together safely. The one thing to keep in mind is the amount of space needed per fish to maintain a safe and healthy environment. Each 1in of fish needs 1 gallon of water. So in a 20 gallon tan you can have 20 inches of fish. The Pleco is the only one I have concerns with as some varieties can grow quite large. Check with your local pet shop as to what needs best suit this type of fish or what type of fish suit your tank best.
Updated on August 12th, 2025
A 6 gallon tank is fine for one Betta. You don't want to go any smaller than 5 gallons unless you want to perform frequent maintenance. Be sure to provide adequate filtration, low current and proper temperature (78F to 80F).
Updated on August 12th, 2025
Thanks for reaching out about your fish. Typically, most recommendations are 1" of fish per 3 liters of water. The better the filter system, the better the water quality and the more biomass can be handled. Remember, fish grow and therefore the biomass will increase. Good luck.
Updated on August 12th, 2025