40 comparisons · 30 guides · stock checked
A healthy aquarium, without beginner mistakes
Profiles for every fish, plant and shrimp with minimum tank size in gallons, ideal water and compatible tank mates, free calculators, step-by-step guides and the gear that actually works, with stock checked on Amazon.
- 187
- species
- 40
- comparisons
- 8
- categories
- 30
- practical guides
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- stock checked · October 8, 2026
Most popular fish
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Bristlenose pleco 26 gal (100 L) · 72–81 °F (22–27 °C) 
Cherry barb 16 gal (60 L) · 73–81 °F (23–27 °C) 
Tiger barb 26 gal (100 L) · 72–79 °F (22–26 °C) 
Betta fish 7 gal (25 L) · 75–82 °F (24–28 °C) 
Common goldfish 79 gal (300 L) · 50–75 °F (10–24 °C) 
Bronze cory 21 gal (80 L) · 72–81 °F (22–27 °C) 
Panda cory 16 gal (60 L) · 68–77 °F (20–25 °C) 
Zebra danio 16 gal (60 L) · 64–77 °F (18–25 °C) 
Discus 79 gal (300 L) · 82–88 °F (28–31 °C) 
Angelfish 53 gal (200 L) · 75–84 °F (24–29 °C) 
Guppy 14 gal (54 L) · 72–82 °F (22–28 °C) 
Dwarf gourami 16 gal (60 L) · 75–82 °F (24–28 °C) Most popular plants
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Browse by category
Aquariums Complete kits, nano tanks and stands 7 comparisonsSee comparison → 
Filters & filtration Canister, internal, hang-on-back and sponge 5 comparisonsSee comparison → 
Heaters & temperature Heaters, thermometers and cooling fans 3 comparisonsSee comparison → 
LED lighting LED lights for fish and planted tanks 2 comparisonsSee comparison → 
CO₂, fertilizers & aquascaping CO₂ kits, fertilizers, substrates and tools 4 comparisonsSee comparison → 
Water care & maintenance Test kits, conditioners, bacteria and cleaning 7 comparisonsSee comparison → 
Fish food Flakes, pellets, sinking wafers and feeders 7 comparisonsSee comparison → 
Substrate & decor Gravel, sand, rocks, driftwood and backgrounds 5 comparisonsSee comparison → Most-read comparisons
Aquariums 15 gallon aquariums See comparison → 
Aquariums Aquarium kits See comparison → 
Aquariums Nano aquariums See comparison → 
Filters Canister filters See comparison → 
Heaters Aquarium heaters See comparison → 
Lighting Aquarium LED lights See comparison → 
Maintenance Aquarium water test kits See comparison → 
Fish food Fish flakes and micro pellets See comparison → How we help you choose
- 1
Pick what you need
Tank, filter, heater or food: every comparison starts by explaining which type suits your tank size and your fish.
- 2
Compare with confidence
Flow rate, wattage, gallons and power use explained with tables, plus the common mistakes that kill fish and how to avoid them.
- 3
Buy what’s in stock
We only link to products with verified stock and good reviews on Amazon. If one sells out, it disappears from the site.
Best sellers in fishkeeping
Aquarium kits Marineland Portrait Glass LED Aquarium Kit, 5 Gallons, Hidden…
Canister filters Penn-Plax Cascade 1000 Canister Filter - 265 GPH Aquarium…
LED lights AQUANEAT LED Aquarium Light Full Spectrum for 30 Inch to 38…
Water test kits EasyStrips 6-in-1 Aquarium Water Test Strips, 25 Count
Flakes & micro pellets Omega One Freshwater Flakes, 5.3 oz, Pack of 2
Why trust AcuarioSano
A fishkeeper’s judgment
We recommend with fish welfare first: honest tank sizes, minimum school sizes, compatible stocking and stable water, not selling more.
Stock checked twice a week
A bot checks every product on Amazon on Mondays and Thursdays. If one sells out, it disappears from the site.
No paid advertising
No brand pays to be featured. We rank by buyer rating and number of reviews.
Step by step
From empty tank to healthy aquarium
Set up, cycle, choose fish and plants, maintain and troubleshoot: all our guides, gear reviews and calculators in one roadmap.
- 1. Set up the aquarium
- 2. Cycle the tank and prepare the water
- 3. Choose fish, plants and invertebrates
- 4. Maintenance
- 5. Problems and fixes
Guides to learn and improve
See all guides →
How to Acclimate Fish: Floating, Drip Method and Quarantine How to acclimate new fish step by step: getting them home, the floating method, drip acclimation for shrimp and sensitive species, quarantine and common mistakes. How to set up a coldwater aquarium: tank size, filter, plants, fish A guide to coldwater tanks: goldfish (and why bowls don't work), white cloud minnows, medaka and paradise fish, temperatures, tank sizes, filtration and tough plants. Shrimp tank guide: Neocaridina vs Caridina, water, breeding, molting How to set up a freshwater shrimp tank: Neocaridina or Caridina, water parameters, a mature tank, drip acclimation, safe tankmates, feeding, breeding and molting issues. Planted Tank for Beginners: Light, Substrate, Fertilizer and CO2 How to start a planted aquarium: lighting, substrate, fertilizers, whether you need CO2, easy plants, planting and trimming, and keeping the balance that stops algae. Aquarium Without a Filter or Heater: Can You Do It Safely? Can you keep an aquarium without a filter or heater? What a filter really does, the Walstad method, coldwater species, the real risks and the safest alternative. Cloudy Aquarium Water: White, Green or Brown and How to Clear It Why aquarium water turns cloudy (white, green, brown or gray), what each color means and how to clear it without drastic water changes that make things worse.