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Small, AKA “Nano” tanks have grown in popularity over the past couple years and continue to gain momentum. Find out if a mini aquarium is right for you.
Updated on November 13th, 2025
Learn how to care for freshwater community fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on November 13th, 2025

What is activated carbon and should you add it to your aquarium filter? Learn about activated carbon's uses, maintenance, and how to add it to your filter.
Updated on November 13th, 2025
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
Learn how to care for brackish water fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on November 13th, 2025
Without anything to use for scale, it is hard for me to tell how big your tank is, but in general it seems very small. Also, the water that is in the tank appears very cloudy right now, so that would be the first place to start. Water quality is very important, and will make or break your ability to house and care for fish. I would recommend getting a good filter system (you can visit a local pet store to assist you with brands in your area, as I am not familiar with what you can get in India). Be sure to bring the measurements (height, length, width) of your tank, or the gallons or liters so they can tell you what capacity of filter you will need. Everything else will depend on what types of fish you get - if you plan on getting multiple fish, they will need to be small - a general rule of thumb is one square inch of fish per gallon of water. Depending on the species you get, you may need to also get a bubbler to ensure there is enough oxygen in the water for them, and you will also
Updated on August 12th, 2025
It looks like a species of gourami. Most can be kept in a community tank with other fish. The black may be caused by high ammonia levels. Submit a water sample for testing or use a liquid home test kit to check chemistry. Ammonia can kill fish if levels are high enough. Partial water changes can be done daily to stabilize chemistry and maintain water quality. Use only aged or conditioned water that is temperature matched to prevent further stress or shock. My preferences for water conditioners include AmQuel Plus, NovAqua and StressCoat.
Updated on August 12th, 2025
You can buy an automatic feeder which you should set to about 3/4 of the normal feeding amount. There are fish that eat algae, you may want to put in an algae eating fish. If you have a working set up (reliable heat, filter and oxygenation) then you should not have to worry about ammonia. Change 1/3 of the water before you leave, check the filter, remove all mulch from the gravel, and the aquarium should be fine.
Updated on August 12th, 2025
All these fish can grow quite large. The loach would be the "smallest" at about 6 to 8 inches when full grown. The Oscars can reach lengths of 18 inches and the Texas cichlid and sharks can reach a foot in length. All these fish will require much larger tanks than the ones you have now. The three Oscars alone would do best in a 125 gallon aquarium MINIMUM. The others may thrive in 55 to 75 gallon tanks. To leave them in small tanks will cause stress, aggression and likely infection.
Updated on August 12th, 2025
It is likely fin rot which is caused by bacterial overgrowth. It may respond to treatment with simple aquarium salt. Place Alpha in a smaller tank, half gallon to one gallon, for easier treatment. Use 1-1.5 teaspoons per gallon. Perform a 100% water change each day and using a fresh water/salt solution. Do this for a maximum of 10 consecutive days. Strive for a water temp between 76 F and 78 F. This will inhibit bacterial growth. Turn off any tank light to further inhibit bacterial growth. Turn off the filter as the current may slow fin regrowth and the filter media may remove enough salt to affect treatment. This treatment should clear most cases of fin rot.
Updated on August 12th, 2025