What Size Tank Do Cherry Barbs Need?
Adult standard length 2.0 inches. Schooling fish: at least 6-10 on a 24 × 12 inch base, about 14 US gallons.
Full breakdown: how many fish per gallon. Full breakdown: how many fish in a 20 gallon tank.
Shop a 14 gallon aquarium kit on Amazon
Affiliate Affiliate disclosure: as an Amazon Associate, we earn from qualifying purchases — at no cost to you.
The figures
| Figure | Value | Source |
|---|---|---|
| Adult standard length | 2.0 in | Seriously Fish |
| Minimum aquarium base | 24 × 12 in | Seriously Fish |
| Approximate volume | 14 US gallons | Seriously Fish |
| Group / social | Schooling; at least 6-10 | Seriously Fish |
| Filter rating | 215-270 liters per hour | Seriously Fish |
| Filter rating in gallons per hour | 56.80-71.33 gph | Calculated from the published liters per hour ÷ 3.785 (Seriously Fish; 1 US gallon = 3.785 liters) |
| Temperature | 68-81°F | Seriously Fish |
| Heater on the profile | 50-75 watts, assuming a room around 68°F | Seriously Fish |
| Aqueon band that contains about 14 gallons | 50 watts for 5-20 gallons | Aqueon |
| Aqueon 100 watt band | 15-40 gallons (14 is below 15) | Aqueon |
Full breakdown: what size filter for a 20 gallon tank.
How to size it
The school is slightly smaller than the neon and harlequin groups, and that is a published difference, not a style choice. Seriously Fish says at least 6-10, on 24 × 12 inches, about 14 US gallons. Neon tetras and harlequin rasboras are at least 8-10 on that same base. Adult standard length is 2.0 inches, the same length printed for zebra danios and platies, on a shorter tank than the danio's 36 inches.
The liter box matches those other 24 × 12 inch species that are not marked for gentle flow. Four times about 14 gallons is 56 gallons per hour and five times is 70, and 56.80-71.33 gph sits on that band. A ram on the same footprint is the gentle-flow exception (29.06-42.27 gph), so the cherry barb filter should not be copied from the ram.
The heater span is 50-75 watts for 68-81°F, assuming a room around 68°F. Aqueon only has the 50 watt band under this volume: 5-20 gallons contains 14, and 15-40 does not, because 14 is below 15. 75 watts is inside the species span and is not a separate Aqueon row. The 100 watt row starts one gallon higher than this minimum.
Shop a 56.80-71.33 gph aquarium filter on Amazon
Accessory: a 50 watt heater, the bottom of the profile's 50-75 watt span and the Aqueon band that contains about 14 gallons. Shop a 50 watt aquarium heater on Amazon
Related pages
- Stocking calculator
- What size tank harlequin rasboras need
- What size tank neon tetras need
- What size heater a 29 gallon tank needs
FAQ
What size tank do cherry barbs need?
Seriously Fish lists a minimum base of 24 × 12 inches, about 14 US gallons, for Puntius titteya, and says they are schooling fish kept in a group of at least 6-10. Adult standard length is 2.0 inches.
What filter rating is listed for cherry barbs?
Seriously Fish lists 215-270 liters per hour. Dividing by 3.785 gives 56.80-71.33 gallons per hour.
What heater wattage is listed for cherry barbs?
Seriously Fish lists 68-81°F and a 50-75 watt heater, assuming a room around 68°F. Aqueon lists 50 watts for 5-20 gallons, which includes about 14 gallons. The 100 watt band starts at 15 gallons.
Sources
- Seriously Fish, Puntius titteya. https://www.seriouslyfish.com/species/puntius-titteya/. Accessed Oct 2, 2026.
- Aqueon, Heater Wattage Guidelines. https://www.aqueon.com/-/media/project/oneweb/aqueon/files/us/educational/aq_heater_wattage_chart.pdf. Accessed Oct 2, 2026.