Freshwater fish and tanks, drawn to scale
What do you want to do?
Example: 20 gallon long
30¼ × 12½ × 12¾ in outsideTo scale: 8 neon tetras, 6 panda corydoras and a honey gourami at adult size. An example group, not advice for every tank; check your own fish.
Plan the essentials
What every freshwater tank needs, in the order to buy and set it up.
Popular fish
Each page opens on the care facts: tank size, temperature, water, group size and temperament, with the fish drawn at adult size in your tank.
Neon tetra
1.6 in · 10+ gal · 70–79 °F
Betta
3 in · 5+ gal · 76–82 °F
Guppy
2.8 in · 10+ gal · 72–82 °F
Cherry shrimp
1.6 in · 5+ gal · 65–82 °F
Bronze corydoras
2.75 in · 20+ gal · 72–80 °F
Angelfish
6 in · 29+ gal · 76–84 °F
Platy
2.5 in · 10+ gal · 70–80 °F
Harlequin rasbora
2 in · 10+ gal · 72–81 °F
Bristlenose pleco
6 in · 29+ gal · 73–81 °F
Fancy goldfish
8 in · 20+ gal · 64–74 °F
Tools for your tank
Photo credits
Real photographs from Wikimedia Commons, resized and cropped to fit; each is used under the license named.
- Neon tetra Holger Krisp, CC BY 3.0, via Wikimedia Commons
- Betta ivabalk (Pixabay), CC0, via Wikimedia Commons
- Guppy Marrabbio2, CC BY-SA 3.0, via Wikimedia Commons
- Cherry shrimp TheJammingYam, CC BY-SA 3.0, via Wikimedia Commons
- Bronze corydoras Quatermass (English Wikipedia), Public domain, via Wikimedia Commons
- Angelfish Citron, CC BY-SA 3.0, via Wikimedia Commons
- Platy Monika Korzeniec, CC BY-SA 3.0, via Wikimedia Commons
- Harlequin rasbora NasserHalaweh, CC BY-SA 4.0, via Wikimedia Commons
- Bristlenose pleco André Karwath aka Aka, CC BY-SA 2.5, via Wikimedia Commons
- Fancy goldfish Benson Kua, CC BY-SA 2.0, via Wikimedia Commons
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